FNUS55 KPIH 190757 FWFPIH Fire Weather Planning Forecast for Southeast Idaho National Weather Service Pocatello ID 157 AM MDT Tue May 19 2026 .DISCUSSION... * Central Idaho Dispatch Area weather impact summary (Zones 475 and 476)... Isolated showers/sprinkles remain in the forecast until late Wednesday afternoon and Thursday, when a better chance of rain and mountain snow arrives. Precipitation amounts are overall light, but higher amounts are possible with heavier showers or bands that could develop. Much warmer weather returns by the weekend with highs running 10-15 degrees ABOVE AVERAGE. * East Idaho Dispatch Area weather impact summary (Zones 410...411 and 413)... Isolated mountain showers/sprinkles remain in the forecast until late Wednesday afternoon and Thursday, when a better chance of rain and mountain snow arrives along with a few thunderstorms. Precipitation amounts are overall light, but higher amounts are possible with heavier showers or bands that could develop. Much warmer weather returns by the weekend with highs running 10-15 degrees ABOVE AVERAGE. * South Central Idaho Dispatch Area weather impact summary (Zones 422...425 and 427)... Isolated mountain showers/sprinkles remain in the forecast until late Wednesday afternoon and Thursday, when a better chance of rain and mountain snow arrives. Precipitation amounts are overall light, but higher amounts are possible with heavier showers or bands that could develop. Much warmer weather returns by the weekend with highs running 10-15 degrees ABOVE AVERAGE. IDZ475-192230- East Salmon River Mountains/Salmon NF- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....53-60 valleys and 44-51 ridges. 24 hr trend......6 degrees up. * Min Humidity.......21-29 percent. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...West 5 to 10 mph. Ridges/upr slopes....West 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......9500-10500 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Partly cloudy. Isolated showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....30-37. 24 hr trend......5 degrees up. * Max Humidity.......63-71 percent. 24 hr trend......4 percent up. * 20ft winds......... Valleys/lwr slopes...Northwest 7 to 10 mph in the evening becoming light. Ridges/upr slopes....West 8 to 13 mph. Gusts up to 20 mph in the evening. * Chc Wetting Rain...0 percent. * Mixing Height......200-1200 ft AGL. * Transport Winds....Northwest around 10 mph in the evening becoming light. .WEDNESDAY... * Sky/weather........Mostly cloudy. Slight chance of rain showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....54-61 valleys and 46-53 ridges. 24 hr trend......2 degrees up. * Min Humidity.......29-37 percent. 24 hr trend......8 percent up. * 20ft winds......... Valleys/lwr slopes...West 6 to 11 mph. Ridges/upr slopes....West 7 to 12 mph with gusts to around 20 mph. * Chc Wetting Rain...10 percent. * Mixing Height......9750-10750 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Chance of rain and snow showers. Lows 31 to 38. Highs 54 to 61. North winds 10 to 20 mph with gusts to around 25 mph. .FRIDAY...Partly cloudy. Lows 34 to 41. Highs 58 to 65. Northwest winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 36 to 43. Highs 63 to 70. West winds 10 to 20 mph with gusts to around 30 mph. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 60s. .MEMORIAL DAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 60s. $$ IDZ476-192230- Lemhi and Lost River Range/Challis NF- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....53-60 valleys and 41-48 ridges. 24 hr trend......6 degrees up. * Min Humidity.......20-28 percent valleys and 28-36 percent ridges. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...West 4 to 9 mph. Ridges/upr slopes....West 5 to 10 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......10000-11000 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly cloudy then becoming partly cloudy. Isolated showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....28-35. 24 hr trend......6 degrees up. * Max Humidity.......62-70 percent. 24 hr trend......9 percent up. * 20ft winds......... Valleys/lwr slopes...Northwest 5 to 8 mph in the evening becoming light. Ridges/upr slopes....West 6 to 11 mph. Gusts up to 20 mph in the evening. * Chc Wetting Rain...10 percent. * Mixing Height......400-1400 ft AGL. * Transport Winds....West around 10 mph in the evening becoming light. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Chance of rain showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....56-63 valleys and 45-52 ridges. 24 hr trend......3 degrees up. * Min Humidity.......25-33 percent valleys and 33-41 percent ridges. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...West 6 to 11 mph. Ridges/upr slopes....West 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......10250-11250 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Windy. Partly cloudy. Scattered showers. Lows 31 to 38. Highs 51 to 58. North winds 20 to 35 mph with gusts to around 40 mph. .FRIDAY...Partly cloudy. Lows 32 to 39. Highs 57 to 64. Northwest winds 10 to 15 mph with gusts to around 25 mph. .SATURDAY...Mostly clear. Lows 34 to 41. Highs 62 to 69. Southwest winds 10 to 20 mph with gusts to around 35 mph. .SUNDAY...Partly cloudy. Lows around 40. Highs in the upper 60s. .MEMORIAL DAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 60s. $$ IDZ422-192230- Sawtooth Range/Northern Sawtooth NF- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Mostly sunny then becoming partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....53-60 valleys and 41-48 ridges. 24 hr trend......4 degrees up. * Min Humidity.......24-32 percent valleys and 33-41 percent ridges. 24 hr trend......6 percent up. * 20ft winds......... Valleys/lwr slopes...Southwest 6 to 11 mph. Ridges/upr slopes....Southwest 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......9250-10250 ft AGL. * Transport Winds....Southwest around 10 mph. .TONIGHT... * Sky/weather........Partly cloudy. Isolated showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....28-35. 24 hr trend......3 degrees up. * Max Humidity.......58-66 percent. 24 hr trend......9 percent up. * 20ft winds......... Valleys/lwr slopes...West 7 to 12 mph shifting to the northwest 4 to 6 mph after midnight. Ridges/upr slopes....Northwest 6 to 11 mph. Gusts up to 20 mph in the evening. * Chc Wetting Rain...0 percent. * Mixing Height......200-1200 ft AGL. * Transport Winds....West around 10 mph in the evening becoming light. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. * Chc of thunder.....0 percent. * Max Temperature....58-65 valleys and 44-51 ridges. 24 hr trend......4 degrees up. * Min Humidity.......27-35 percent valleys and 40-48 percent ridges. 24 hr trend......4 percent up. * 20ft winds......... Valleys/lwr slopes...West 9 to 14 mph. Ridges/upr slopes....West 9 to 14 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......10250-11250 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 31 to 38. Highs 55 to 62. North winds 10 to 20 mph with gusts to around 25 mph. .FRIDAY...Partly cloudy. Lows 34 to 41. Highs 58 to 65. Northwest winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 35 to 42. Highs 63 to 70. West winds 10 to 20 mph with gusts to around 30 mph. .SUNDAY...Mostly clear. Lows around 40. Highs around 70. .MEMORIAL DAY...Mostly clear. Lows in the lower 40s. Highs in the upper 60s. $$ IDZ425-192230- Middle Snake River Valley/Twin Falls BLM north of the Snake River- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....Around 64. 24 hr trend......3 degrees up. * Min Humidity.......19-25 percent. 24 hr trend......4 percent up. * 20ft winds.........East winds 4 to 6 mph shifting to the southwest 6 to 11 mph with gusts to around 20 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......10250-11250 ft AGL. * Transport Winds....Southeast around 10 mph shifting to the west in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....33-38. 24 hr trend......3 degrees up. * Max Humidity.......66-74 percent. 24 hr trend......10 percent up. * 20ft winds.........Southwest winds 7 to 12 mph. Gusts up to 20 mph in the evening. * Chc Wetting Rain...0 percent. * Mixing Height......100-1100 ft AGL. * Transport Winds....West around 15 mph in the evening becoming light. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. * Chc of thunder.....0 percent. * Max Temperature....Around 69. 24 hr trend......5 degrees up. * Min Humidity.......21-26 percent. 24 hr trend......Little change. * 20ft winds.........Southwest winds 9 to 14 mph. Gusts up to 25 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......11250-12250 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Isolated showers. Lows around 40. Highs in the upper 60s. Northwest winds 10 to 15 mph with gusts to around 25 mph. .FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. East winds 5 to 10 mph with gusts to around 15 mph. .SATURDAY...Clear. Lows in the lower 40s. Highs around 80. Southwest winds 10 to 20 mph with gusts to around 30 mph. .SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the lower 80s. .MEMORIAL DAY...Mostly clear. Lows in the upper 40s. Highs in the lower 80s. $$ IDZ427-192230- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Sunny then becoming partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....59-65 valleys and 52-59 ridges. 24 hr trend......4 degrees up. * Min Humidity.......18-26 percent valleys and 23-31 percent ridges. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...West 4 to 9 mph. Ridges/upr slopes....Northwest 4 to 9 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......10250-11250 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....34-41. 24 hr trend......6 degrees up. * Max Humidity.......50-58 percent valleys and 46-54 percent ridges. 24 hr trend......4 percent down. * 20ft winds......... Valleys/lwr slopes...West 6 to 9 mph shifting to the south 4 to 6 mph after midnight. Ridges/upr slopes....Northwest 5 to 8 mph with gusts to around 15 mph shifting to the southwest 4 to 6 mph after midnight. * Chc Wetting Rain...0 percent. * Mixing Height......100-1100 ft AGL. * Transport Winds....West around 10 mph shifting to the southwest after midnight. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. * Chc of thunder.....0 percent. * Max Temperature....65-71 valleys and 58-65 ridges. 24 hr trend......6 degrees up. * Min Humidity.......19-27 percent. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...Southwest 4 to 6 mph shifting to the west 5 to 10 mph in the afternoon. Ridges/upr slopes....West 4 to 9 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......11250-12250 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Scattered showers. Lows 39 to 46. Highs 61 to 68. Northwest winds 10 to 20 mph with gusts to around 25 mph. .FRIDAY...Partly cloudy. Lows 39 to 46. Highs 66 to 73. West winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 42 to 49. Highs 72 to 79. Southwest winds 10 to 15 mph with gusts to around 25 mph. .SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. .MEMORIAL DAY...Mostly clear. Lows around 50. Highs in the upper 70s. $$ IDZ410-192230- Upper Snake River Valley/Idaho Falls BLM- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Mostly sunny. * Chc of thunder.....0 percent. * Max Temperature....56-63. 24 hr trend......6 degrees up. * Min Humidity.......19-27 percent. 24 hr trend......3 percent up. * 20ft winds.........East winds 4 to 6 mph shifting to the southwest 6 to 11 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......10750-11750 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Partly cloudy. * Chc of thunder.....0 percent. * Min Temperature....31-36. 24 hr trend......6 degrees up. * Max Humidity.......61-69 percent. 24 hr trend......Little change. * 20ft winds.........Southwest winds 7 to 12 mph. * Chc Wetting Rain...0 percent. * Mixing Height......300-1300 ft AGL. * Transport Winds....Southwest around 10 mph. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Isolated rain showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....60-67. 24 hr trend......4 degrees up. * Min Humidity.......22-30 percent. 24 hr trend......2 percent up. * 20ft winds.........Southwest winds 7 to 12 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......11000-12000 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Windy. Mostly cloudy. Scattered showers. Lows 36 to 41. Highs 59 to 66. North winds 20 to 30 mph with gusts to around 45 mph. .FRIDAY...Partly cloudy. Lows 34 to 39. Highs 64 to 71. Northeast winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 36 to 42. Highs 70 to 77. South winds 10 to 20 mph with gusts to around 30 mph. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .MEMORIAL DAY...Mostly clear. Lows in the mid 40s. Highs in the upper 70s. $$ IDZ411-192230- Centennial Mountains and Snake River Range/Targhee NF- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Sunny then becoming partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....Around 57 valleys and 45-52 ridges. 24 hr trend......6 degrees up. * Min Humidity.......21-28 percent valleys and 26-34 percent ridges. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...Southwest 4 to 9 mph. Ridges/upr slopes....Southwest 4 to 9 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......9500-10500 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Partly cloudy. Isolated showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....27-34. 24 hr trend......7 degrees up. * Max Humidity.......66-74 percent valleys and 60-68 percent ridges. 24 hr trend......6 percent down. * 20ft winds......... Valleys/lwr slopes...South 4 to 6 mph shifting to the southeast around 4 mph after midnight. Ridges/upr slopes....South 4 to 8 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......400-1400 ft AGL. * Transport Winds....Southwest around 10 mph. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Scattered showers and isolated thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....Around 61 valleys and 49-56 ridges. 24 hr trend......3 degrees up. * Min Humidity.......25-30 percent valleys and 33-41 percent ridges. 24 hr trend......6 percent up. * 20ft winds......... Valleys/lwr slopes...Southwest 4 to 9 mph. Ridges/upr slopes....Southwest 4 to 9 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......9750-10750 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Windy. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 32 to 39. Highs 48 to 55. North winds 20 to 30 mph with gusts to around 40 mph. .FRIDAY...Partly cloudy. Lows 29to 36. Highs 54 to 61. Northeast winds 10 to 15 mph with gusts to around 25 mph. .SATURDAY...Mostly clear. Lows 33 to 40. Highs 60 to 67. South winds 10 to 15 mph with gusts to around 30 mph. .SUNDAY...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .MEMORIAL DAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 60s. $$ IDZ413-192230- Caribou Range/Caribou NF- 157 AM MDT Tue May 19 2026 .Today... * Sky/weather........Sunny then becoming partly cloudy. Isolated showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....55-62 valleys and 47-54 ridges. 24 hr trend......6 degrees up. * Min Humidity.......22-30 percent valleys and 30-38 percent ridges. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...East 4 to 5 mph shifting to the west 4 to 6 mph in the afternoon. Ridges/upr slopes....Southeast 4 to 7 mph with gusts to around 15 mph shifting to the west 4 to 6 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......10250-11250 ft AGL. * Transport Winds....Light winds becoming northwest around 10 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....29-36. 24 hr trend......5 degrees up. * Max Humidity.......61-69 percent. 24 hr trend......13 percent down. * 20ft winds......... Valleys/lwr slopes...Southwest 4 to 6 mph shifting to the southeast 4 to 5 mph after midnight. Ridges/upr slopes....Southwest 4 to 7 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......300-1300 ft AGL. * Transport Winds....Southwest around 10 mph in the evening becoming light. .WEDNESDAY... * Sky/weather........Partly cloudy then becoming mostly cloudy. Isolated showers and thunderstorms in the afternoon. * Chc of thunder.....15 percent. * Max Temperature....60-67 valleys and 52-59 ridges. 24 hr trend......5 degrees up. * Min Humidity.......23-31 percent valleys and 29-37 percent ridges. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...Southwest 4 to 9 mph. Ridges/upr slopes....South 4 to 7 mph with gusts to around 15 mph shifting to the west 5 to 10 mph with gusts to around 20 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......11000-12000 ft AGL. * Transport Winds....Southwest 10 to 15 mph. .Forecast days 3 through 7...... .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 36 to 43. Highs 56 to 63. West winds 10 to 15 mph with gusts to around 25 mph. .FRIDAY...Partly cloudy. Lows 33 to 40. Highs 61 to 68. Northeast winds 10 to 15 mph with gusts to around 30 mph. .SATURDAY...Mostly clear. Lows 36 to 43. Highs 68 to 75. South winds 10 to 15 mph with gusts to around 25 mph. .SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. .MEMORIAL DAY...Mostly clear. Lows in the mid 40s. Highs in the mid 70s. $$ .OUTLOOK FOR May 26th-June 1st: ABOVE AVERAGE TEMPERATURES and NEAR AVERAGE PRECIPITATION. $$