FNUS56 KOTX 181228 FWFOTX Fire Weather Planning Forecast for Eastern Washington and North Idaho National Weather Service Spokane WA 528 AM PDT Mon May 18 2026 .DISCUSSION... Temperatures trend warmer and drier through the week. Afternoon showers and isolated thunderstorms will increase across far northeast Washington and north Idaho early this afternoon and move southeastward through the early evening. Shower chances retreat mainly to the mountains for Tuesday and then to the Idaho Panhandle on Wednesday. Diurnally driven breezy northwest winds are expected through the Cascade valleys in the afternoon and evenings Monday and Tuesday. *************************************************************** Forecasts for 20 foot wind speeds (valleys and ridge tops) are 10 minute averages reflecting RAWS wind. ***Ventilation Index is derived from transport wind multiplied by the mixing height divided by 100. Categories: low (< 200), moderate (200-500), high (500-800), and very high (> 800). *************************************************************** WAZ696-698-190130- East Washington Central Cascades (Zone 696)- East Washington North Cascades (Zone 698)- Including the cities of Stevens Pass, Lake Wenatchee Area, and Leavenworth 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. A chance of rain and high mountain snow showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....61-71 valleys and 49-59 mountains. * 24 hr Trend........1 degree cooler. * Min Humidity........25-40 percent valleys and 35-50 percent mountains. * 24 hr Trend........1 percent drier valleys, and 5 percent wetter mountains. * 20-foot winds....... * Valleys/Lwr Slopes...West 4 to 8 in the morning increasing to west 10 to 17 mph with gusts to around 25 mph in the afternoon. * Ridges/Upr Slopes....West 4 to 8 in the morning increasing to west 13 to 20 mph with gusts to around 30 mph in the afternoon. * Mixing Height.......7000 ft AGL. * Transport Winds.....Northwest 10 to 20 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (397) in the morning increasing to very high (834) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. A chance of rain showers early in the evening. Widespread frost overnight. * Chance of Lightning...0 percent. * Min Temperature.....39-49 valleys and 31-41 mountains. * 24 hr Trend........Unchanged. * Max Humidity........55-70 percent valleys and 61-80 percent mountains. * 24 hr Trend........Unchanged valleys, and 15 percent drier mountains. * Humidity Recovery...Good. * 20-foot winds....... * Valleys/Lwr Slopes...Northwest 6 to 13 mph. Gusts up to 25 mph in the evening. * Ridges/Upr Slopes....Northwest 8 to 15 mph with gusts to around 30 mph. * Mixing Height.......4000 ft AGL falling to near surface. * Transport Winds.....Northwest 10 to 20 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (704) in the evening decreasing to low (70) overnight. .TUESDAY... * Sky/Weather.........Partly sunny. * Chance of Lightning...0 percent. * Max Temperature.....62-72 valleys and 50-60 mountains. * Min Humidity........30-45 percent valleys and 45-60 percent mountains. * 20-foot winds....... * Valleys/Lwr Slopes...West 4 to 7 in the morning increasing to 10 to 15 mph in the afternoon. Gusts up to 20 mph in the morning increasing to 30 mph in the afternoon. * Ridges/Upr Slopes....West 5 to 8 mph in the morning increasing to 11 to 16 mph in the afternoon. Gusts up to 30 mph in the afternoon. * Mixing Height.......6000 ft AGL. * Transport Winds.....Northwest 10 to 20 mph. * CWR (> 0.10 IN).....0 percent. *Ventilation Index...High (539) in the morning increasing to very high (849) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY THROUGH THURSDAY...Partly cloudy. Lows 44 to 54 valleys...37 to 47 mountains. Highs 69 to 79 valleys...56 to 66 mountains. West wind 5 to 15 mph. .FRIDAY...Mostly clear. Lows 45 to 54 valleys...39 to 49 mountains. Highs 70 to 80 valleys...59 to 69 mountains. West wind 5 to 15 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 44 to 54 valleys... 39 to 49 mountains. Highs 67 to 77 valleys...56 to 66 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ697-190130- East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697)- Including the city of Stehekin 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. Widespread frost early in the morning. * Chance of Lightning...0 percent. * Max Temperature.....59-69 valleys and 46-56 mountains. * 24 hr Trend........Unchanged. * Min Humidity........40-55 percent. * 24 hr Trend........15 percent wetter. * 20-foot winds....... * Valleys/Lwr Slopes...West 4 to 8 mph. * Ridges/Upr Slopes....West 10 to 16 mph. * Mixing Height.......5000 ft AGL. * Transport Winds.....Northwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (364) in the morning increasing to high (672) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost overnight. * Chance of Lightning...0 percent. * Min Temperature.....38-48 valleys and 30-40 mountains. * 24 hr Trend........1 degree cooler. * Max Humidity........60-70 percent valleys and 65-80 percent mountains. * 24 hr Trend........Unchanged. * Humidity Recovery...Good. * 20-foot winds....... * Valleys/Lwr Slopes...Northwest 2 to 7 mph. * Ridges/Upr Slopes....Northwest 5 to 12 mph. * Mixing Height.......3500 ft AGL falling to near surface. * Transport Winds.....West 10 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (500) in the evening decreasing to low (48) overnight. .TUESDAY... * Sky/Weather.........Partly sunny. A chance of rain showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....59-69 valleys and 47-57 mountains. * Min Humidity........50-65 percent. * 20-foot winds....... * Valleys/Lwr Slopes...West 3 to 7 mph in the morning increasing to west 6 to 12 mph in the afternoon. Gusts up to 20 mph in the afternoon. * Ridges/Upr Slopes....West 5 to 14 mph with gusts to around 25 mph. * Mixing Height.......4500 ft AGL. * Transport Winds.....West 10 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (417) in the morning increasing to high (616) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY THROUGH THURSDAY...Partly cloudy. Lows 44 to 54 valleys...36 to 46 mountains. Highs 68 to 78 valleys...55 to 65 mountains. West wind 5 to 15 mph. .FRIDAY...Mostly clear. Lows 44 to 54 valleys...38 to 48 mountains. Highs 68 to 78 valleys...58 to 68 mountains. West wind 5 to 15 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 43 to 53 valleys... 37 to 47 mountains. Highs 64 to 74 valleys...54 to 64 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ704-190130- Methow Valley (Zone 704)- Including the cities of Mazama, Winthrop, and Twisp 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. A chance of rain showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....65-73. * 24 hr Trend........4 degrees warmer. * Min Humidity........20-28percent. * 24 hr Trend........1 percent drier. * 20-foot winds.......Northwest 3 to 8 mph in the morning increasing to northwest 6 to 12 mph in the afternoon. * Mixing Height.......8500 ft AGL. * Transport Winds.....Northwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (378) in the morning increasing to very high (957) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. A chance of rain showers early in the evening. * Chance of Lightning...0 percent. * Min Temperature.....38-48. * 24 hr Trend........Unchanged. * Max Humidity........61-80 percent. * 24 hr Trend........10 percent drier. * Humidity Recovery...Good. * 20-foot winds.......Northwest 3 to 11 mph. * Mixing Height.......6000 ft AGL falling to near surface. * Transport Winds.....Northwest 10 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (747) in the evening decreasing to low (61) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....66-75. * Min Humidity........25-35 percent. * 20-foot winds.......Northwest 3 to 8 mph. Gusts up to 20 mph in the afternoon. * Mixing Height.......8000 ft AGL. * Transport Winds.....Northwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (526) in the morning increasing to very high (883) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 42 to 52. Highs 70 to 79. Northwest wind up to 10 mph. .THURSDAY...Partly cloudy. Lows 46 to 56. Highs 71 to 81. West wind up to 10 mph. .FRIDAY...Mostly clear. Lows 45 to 55. Highs 74 to 82. West wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 45 to 55. Highs 70 to 80. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ703-190130- Okanogan Valley (Zone 703)- Including the cities of Conconully and Omak 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. A chance of rain showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....66-75. * 24 hr Trend........1 degree cooler. * Min Humidity........22-30 percent. * 24 hr Trend........2 percent drier. * 20-foot winds.......North 3 to 5 mph in the morning shifting to the southwest 3 to 9 mph with gusts to around 20 mph in the afternoon. * Mixing Height.......9000 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (301) in the morning increasing to very high (871) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. * Chance of Lightning...0 percent. * Min Temperature.....43-49. * 24 hr Trend........2 degrees warmer. * Max Humidity........55-70 percent. * 24 hr Trend........Unchanged. * Humidity Recovery...Fair. * 20-foot winds.......Northwest 3 to 10 mph. * Mixing Height.......6500 ft AGL falling to near surface. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (703) in the evening decreasing to low (47) overnight. .TUESDAY... * Sky/Weather.........Partly sunny. * Chance of Lightning...0 percent. * Max Temperature.....68-77. * Min Humidity........23-30 percent. * 20-foot winds.......Northwest 3 to 6 mph in the morning shifting to the southwest 4 to 8 mph in the afternoon. * Mixing Height.......8500 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (359) in the morning increasing to very high (852) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 48 to 53. Highs 71 to 81. North wind 5 to 15 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 50 to 56. Highs 73 to 83. Northwest wind 4 to 15 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 49 to 56. Highs 73 to 83. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ702-190130- Colville Reservation (Zone 702)- Including the cities of Nespelem and Keller 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. A chance of rain showers in the late morning and afternoon. * Chance of Lightning...0 percent. * Max Temperature.....63-73 valleys and 56-64 mountains. * 24 hr Trend........2 degrees warmer. * Min Humidity........25-40 percent. * 24 hr Trend........2 percent drier valleys, and 5 percent wetter mountains. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest up to 7 mph. * Ridges/Upr Slopes....Southwest up to 7 mph. * Mixing Height.......8500 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (437) in the morning increasing to high (755) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. A chance of rain showers early in the evening. * Chance of Lightning...0 percent. * Min Temperature.....41-46. * 24 hr Trend........3 degrees warmer. * Max Humidity........60-70 percent. * 24 hr Trend........5 percent drier. * Humidity Recovery...Fair. * 20-foot winds....... * Valleys/Lwr Slopes...Northwest up to 7 mph. * Ridges/Upr Slopes....Northwest up to 7 mph. * Mixing Height.......7000 ft AGL falling to near surface. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (732) in the evening decreasing to low (26) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....66-76 valleys and 59-67 mountains. * Min Humidity........25-35 percent. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest up to 7 mph. * Ridges/Upr Slopes....Southwest up to 8 mph. * Mixing Height.......8500 ft AGL. * Transport Winds.....West 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (409) in the morning increasing to very high (831) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 69 to 79 valleys...62 to 71 mountains. Northwest wind up to 10 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 47 to 53. Highs 71 to 81 valleys...64 to 74 mountains. West wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 47 to 54. Highs 71 to 81 valleys...64 to 74 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ699-190130- Okanogan Highlands and Kettle Mountains (Zone 699)- Including the cities of Republic and Curlew 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. A chance of rain showers in the late morning and afternoon. * Chance of Lightning...0 percent. * Max Temperature.....63-72 valleys and 55-64 mountains. * 24 hr Trend........3 degrees warmer. * Min Humidity........26-40 percent. * 24 hr Trend........Unchanged valleys, and 5 percent drier mountains. * 20-foot winds....... * Valleys/Lwr Slopes...Northwest up to 4 mph in the morning shifting to the west 3 to 6 mph in the afternoon. * Ridges/Upr Slopes....Northwest up to 7 mph. * Mixing Height.......8500 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (515) in the morning increasing to high (749) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. A chance of rain showers earlyin the evening. * Chance of Lightning...0 percent. * Min Temperature.....39-46. * 24 hr Trend........2 degrees warmer. * Max Humidity........61-80 percent valleys and 55-70 percent mountains. * 24 hr Trend........10 percent wetter valleys, and 10 percent drier mountains. * Humidity Recovery...Good. * 20-foot winds....... * Valleys/Lwr Slopes...Northwest up to 6 mph. * Ridges/Upr Slopes....Northwest up to 6 mph. * Mixing Height.......5500 ft AGL falling to near surface. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (622) in the evening decreasing to low (29) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....65-74 valleys and 58-66 mountains. * Min Humidity........27-40 percent. * 20-foot winds....... * Valleys/Lwr Slopes...West up to 7 mph. * Ridges/Upr Slopes....West up to 7 mph. Gusts up to 20 mph in the afternoon. * Mixing Height.......8000 ft AGL. * Transport Winds.....West 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (467) in the morning increasing to very high (854) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY THROUGH FRIDAY...Partly cloudy. Lows 42 to 52. Highs 70 to 80 valleys...63 to 73 mountains. West wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 44 to 53. Highs 71 to 81 valleys...64 to 74 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ700-701-190130- Selkirk Mountains of Northeast Washington (Zone 700)- Foothills of Northeast Washington (Zone 701)- Including the cities of Metaline Falls, Ione, Colville, Deer Park, and Newport 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. Areas of fog and frost early in the morning. A chance of showers and thunderstorms in the late morning and afternoon. * Chance of Lightning...20 percent. * Max Temperature.....62-70 valleys and 53-63 mountains. * 24 hr Trend........7 degrees warmer. * Min Humidity........30-45 percent valleys and 40-55 percent mountains. * 24 hr Trend........10 percent drier valleys, and 15 percent drier mountains. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest up to 6 mph. * Ridges/Upr Slopes....West up to 7 mph. * Mixing Height.......8000 ft AGL. * Transport Winds.....West 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (374) in the morning increasing to high (624) in the afternoon. .TONIGHT... * Sky/Weather.........Mostly cloudy then becoming partly cloudy. A chance of rain showers early in the evening. Areas of fog early in the morning. * Chance of Lightning...0 percent. * Min Temperature.....37-45. * 24 hr Trend........3 degrees warmer. * Max Humidity........71-90 percent. * 24 hr Trend........Unchanged. * Humidity Recovery...Good. * 20-foot winds....... * Valleys/Lwr Slopes...South up to 6 mph. * Ridges/Upr Slopes....South up to 6 mph. * Mixing Height.......4000 ft AGL falling to near surface. * Transport Winds.....South 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (464) in the evening decreasing to low (26) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. A chance of rain showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....65-73 valleys and 56-66 mountains. * Min Humidity........25-40 percent valleys and 35-50 percent mountains. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest up to 8 mph. Gusts up to 20 mph in the afternoon. * Ridges/Upr Slopes....Southwest up to 10 mph. Gusts upto 25 mph in the afternoon. * Mixing Height.......8000 ft AGL. * Transport Winds.....Southwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (561) in the morning increasing to very high (869) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 40 to 48. Highs 68 to 77 valleys...59 to 69 mountains. Northwest wind up to 10 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 41 to 51. Highs 70 to 80 valleys...62 to 72 mountains. Southwest wind up to 5 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 43 to 52. Highs 71 to 81 valleys...63 to 73 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ IDZ101-190130- Northern and Central Idaho Panhandle (Zone 101)- Including the cities of St. Maries, Rathdrum Prairie, Silver Valley, Bonners Ferry, and Priest Lake 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. Areas of frost early in the morning. A chance of showers and thunderstorms in the late morning and afternoon. * Chance of Lightning...20 percent. * Max Temperature.....59-65 valleys and 48-58 mountains. * 24 hr Trend........6 degrees warmer. * Min Humidity........40-55 percent valleys and 50-65 percent mountains. * 24 hr Trend........5 percent drier valleys, and 10 percent wetter mountains. * 20-foot winds....... * Valleys/Lwr Slopes...West up to 6 mph. * Ridges/Upr Slopes....West up to 7 mph. * Mixing Height.......6000 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (322) in the morning increasing to high (507) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. A chance of rain showers early in the evening. Areas of frost early in the morning. * Chance of Lightning...0 percent. * Min Temperature.....35-45. * 24 hr Trend........3 degrees warmer. * Max Humidity........75-90 percent. * 24 hr Trend........20 percent drier valleys, and unchanged mountains. * Humidity Recovery...Good. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest 3 to 5 mph in the evening shifting to the southeast up to 4 mph overnight. * Ridges/Upr Slopes....Southwest 3 to 7 mph. * Mixing Height.......3500 ft AGL falling to near surface. * Transport Winds.....Southwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (402) in the evening decreasing to low (39) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. A chance of rain showers in the afternoon. * Chance of Lightning...0 percent. * Max Temperature.....62-69 valleys and 52-62 mountains. * Min Humidity........35-45 percent valleys and 45-60 percent mountains. * 20-foot winds....... * Valleys/Lwr Slopes...Southwest 5 to 11 mph. Gusts up to 20 mph in the afternoon. * Ridges/Upr Slopes....Southwest 6 to 13 mph with gusts to around 25 mph. * Mixing Height.......6500 ft AGL. * Transport Winds.....Southwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Very high (966) in the morning increasing to very high (984) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 39 to 48. Highs 65 to 72 valleys...54 to 64 mountains. West wind up to 10 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 39 to 49. Highs 67 to 75 valleys...59 to 69 mountains. Southwest wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 43 to 51. Highs 68 to 76 valleys...60 to 70 mountains. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ705-706-190130- Foothills of Central Washington Cascades (Zone 705)- Waterville Plateau (Zone 706)- Including the cities of Chelan, Wenatchee, Waterville, and Grand Coulee 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....66-76. * 24 hr Trend........4 degrees warmer. * Min Humidity........22-30 percent. * 24 hr Trend........9 percent drier. * 20-foot winds.......Northwest 3 to 8 mph in the morning shifting to the west 7 to 13 mph in the afternoon. * Mixing Height.......9500 ft AGL. * Transport Winds.....Northwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (315) in the morning increasing to very high (921) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. * Chance of Lightning...0 percent. * Min Temperature.....42-49. * 24 hr Trend........2 degrees warmer. * Max Humidity........55-70 percent. * 24 hr Trend........10 percent drier. * Humidity Recovery...Fair. * 20-foot winds.......West 8 to 16 mph. Gusts up to 30 mph in the evening. * Mixing Height.......7000 ft AGL falling to near surface. * Transport Winds.....Northwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Very high (815) in the evening decreasing to low (62) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....68-77. * Min Humidity........25-35 percent. * 20-foot winds.......West 5 to 10 mph. Gusts up to 25 mph in the afternoon. * Mixing Height.......8000 ft AGL. * Transport Winds.....West 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (521) in the morning increasing to very high (949) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY THROUGH THURSDAY...Partly cloudy. Lows 46 to 55. Highs 73 to 83. West wind up to 10 mph. .FRIDAY...Mostly clear. Lows 50 to 55. Highs 75 to 84. West wind 5 to 15 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 48 to 55. Highs 72 to 82. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ707-708-190130- Western Columbia Basin (Zone 707)-Eastern Columbia Basin - Palouse - Spokane Area (Zone 708)- Including the cities of Moses Lake, Ephrata, Spokane, Pullman, Ritzville, Wilbur, and Cheney 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....66-75. * 24 hr Trend........9 degrees warmer. * Min Humidity........25-35 percent. * 24 hr Trend........11 percent wetter. * 20-foot winds.......Southeast 3 to 6 mph in the morning shifting to the west 3 to 8 mph in the afternoon. * Mixing Height.......9000 ft AGL. * Transport Winds.....Northwest 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (307) in the morning increasing to high (787) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. * Chance of Lightning...0 percent. * Min Temperature.....41-48. * 24 hr Trend........3 degrees warmer. * Max Humidity........61-80 percent. * 24 hr Trend........10 percent drier. * Humidity Recovery...Good. * 20-foot winds.......Southwest 3 to 11 mph. * Mixing Height.......8000 ft AGL falling to near surface. * Transport Winds.....West 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (798) in the evening decreasing to low (53) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....69-77. * Min Humidity........25-35 percent. * 20-foot winds.......Southwest 3 to 10 mph. * Mixing Height.......8000 ft AGL. * Transport Winds.....West 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (707) in the morning increasing to very high (983) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 44 to 50. Highs 72 to 80. West wind up to 10 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 45 to 54. Highs 74 to 84. Southwest wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 48 to 54. Highs 74 to 84. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$ WAZ709-190130- Lower Palouse - Snake River (Zone 709)- Including the city of Pomeroy 528 AM PDT Mon May 18 2026 .Today... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....63-73. * 24 hr Trend........7 degrees warmer. * Min Humidity........30-45 percent. * 24 hr Trend........Unchanged. * 20-foot winds.......Southwest 3 to 9 mph in the morning shifting to the west 5 to 9 mph in the afternoon. * Mixing Height.......8000 ft AGL. * Transport Winds.....West 5 to 10 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (392) in the morning increasing to high (656) in the afternoon. .TONIGHT... * Sky/Weather.........Partly cloudy. * Chance of Lightning...0 percent. * Min Temperature.....42-46. * 24 hr Trend........3 degrees warmer. * Max Humidity........61-80 percent. * 24 hr Trend........Unchanged. * Humidity Recovery...Good. * 20-foot winds.......Southwest 3 to 9 mph. * Mixing Height.......6500 ft AGL falling to near surface. * Transport Winds.....Southwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...Moderate (493) in the evening decreasing to low (56) overnight. .TUESDAY... * Sky/Weather.........Mostly sunny. * Chance of Lightning...0 percent. * Max Temperature.....66-76. * Min Humidity........28-40 percent. * 20-foot winds.......Southwest 3 to 12 mph. * Mixing Height.......6500 ft AGL. * Transport Winds.....Southwest 5 to 15 mph. * CWR (> 0.10 IN).....0 percent. * Ventilation Index...High (616) in the morning increasing to very high (948) in the afternoon. .Forecast Days 3 Through 7...... .WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 69 to 79. Southwest wind up to 10 mph. .THURSDAY THROUGH FRIDAY...Partly cloudy. Lows 47 to 52. Highs 72 to 82. Southwest wind up to 10 mph. .SATURDAY THROUGH SUNDAY...Partly cloudy. Lows 49 to 54. Highs 73 to 83. .8 to 14 Day Outlook for May 25 - 31 2026 Near normal temperatures and near normal precipitation. $$