FNUS53 KGRR 221817 FWFGRR Fire Weather Planning Forecast for Southwest Lower Michigan National Weather Service Grand Rapids MI 217 PM EDT Sat Aug 22 2026 ...Breezy Through Weekend... .DISCUSSION... A cold front continues to move through Michigan with showers and thunderstorms ahead of the front and gusty northwest winds to 30 mph behind the front. Additional showers are possible Sunday during the afternoon largely north of I-96. Northwest winds will continue to be breezy with gusts to 30 mph. Minimum relative humidity values are expected to remain above 50 percent. Monday drier conditions move in with minimum relative humidity values in the upper 30s to low 50s. Lowest values are expected in the Clare, Osceola, Mecosta, and Isabella County area. Northwest winds are not expected to be as strong with gusts around 20 mph Monday afternoon. MIZ037>039-043>045-230830- Mason-Lake-Osceola-Oceana-Newaygo-Mecosta- Including the cities of Ludington, Baldwin, Reed City, Hart, Fremont, and Big Rapids 217 PM EDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly clear (20-30 percent). Min temperature.....48-53. 24 hr trend......7 degrees cooler. Max humidity........95-100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 6 to 11 mph. Gusts up to 22 mph in the evening. Mixing height.......Near Lake Michigan, 2900-3400 ft AGL. Mixing height.......Inland, 4500-5000 ft AGL decreasing to 100-600 ft AGL after midnight. Transport winds.....North 10 to 15 mph. Smoke dispersal.....970 (excellent) decreasing to 100 (poor) after midnight. Pcpn Amount.........None to 0.12 in. .SUNDAY... Sky/weather.........Mostly sunny (35-45 percent). Slight chance of rain showers after 8 AM. Chance of pcpn......20 percent. Max temperature.....67-72. 24 hr trend......4 degrees cooler. Min humidity........57-62 percent near Lake Michigan and 49-54 percent Inland. 24 hr trend......8 percent drier near Lake Michigan and 5 percent drier Inland. 20-foot winds.......Northwest winds 10 to 15 mph with gusts to around 26 mph. Mixing height.......5200-5700 ft AGL. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....920-1100 (excellent). Pcpn Amount.........none to 0.03 in. .SUNDAY NIGHT... Sky/weather.........Partly cloudy (20-30 percent). Min temperature.....45-50. 24 hr trend......4 degrees cooler. Max humidity........95-100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 5 to 10 mph. Gusts up to 22 mph in the evening. Mixing height.......4600-5100 ft AGL decreasing to 1800-2300 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....1040 (excellent) decreasing to 140 (fair) after midnight. Pcpn Amount.........none to 0.01 in. .MONDAY... Sky/weather.........Sunny (15-25 percent). Max temperature.....73-78. 24 hr trend......6 degrees warmer. Min humidity........49-54 percent near Lake Michigan and 36-41 percent Inland. 24 hr trend......9 percent drier near Lake Michigan and 11 percent drier Inland. 20-foot winds.......Northwest winds 7 to 12 mph. Gusts up to 22 mph in the afternoon. Mixing height.......3500-4000 ft AGL near Lake Michigan and 4900-5400 ft AGL Inland. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....670-930 (excellent). Pcpn Amount.........None. $$ MIZ040-046-230830- Clare-Isabella- Including the cities of Clare and Mount Pleasant 217 PM EDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent). Min temperature.....48-53. 24 hr trend......6 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 8 to 13 mph and gusty. Mixing height.......3900-4400 ft AGL decreasing to 300-800 ft AGL after midnight. Transport winds.....Northwest around 15 mph. Smoke dispersal.....770 (excellent) decreasing to 100 (poor) after midnight. Pcpn Amount.........none to 0.01 in. .SUNDAY... Sky/weather.........Mostly sunny (40-50 percent). Slight chance of rain showers after 8 AM. Chance of pcpn......20 percent. Max temperature.....68-73. 24 hr trend......3 degrees cooler. Min humidity........51-56 percent. 24 hr trend......9 percent drier. 20-foot winds.......Northwest winds 11 to 16 mph with higher gusts. Mixing height.......5100-5600 ft AGL. Transport winds.....Northwest around 20 mph. Smoke dispersal.....970-1150 (excellent). Pcpn Amount.........none to 0.02 in. .SUNDAY NIGHT... Sky/weather.........Partly cloudy (20-30 percent). Min temperature.....44-49. 24 hr trend......4 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 7 to 12 mph. Gusts up to 24 mph in the evening. Mixing height.......4500-5000 ft AGL decreasing to 1100-1600 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....1040 (excellent) decreasing to 130 (fair) after midnight. Pcpn Amount.........None. .MONDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....75-80. 24 hr trend......6 degrees warmer. Min humidity........37-42 percent. 24 hr trend......16 percent drier. 20-foot winds.......Northwest winds 9 to 14 mph. Mixing height.......3800-4300 ft AGL increasing to 6500-7000 ft AGL in the afternoon. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....770-1140 (excellent). Pcpn Amount.........None. $$ MIZ050-056-064-071-230830- Muskegon-Ottawa-Allegan-Van Buren- Including the cities of Muskegon, Grand Haven, Jenison, Holland, and South Haven 217 PM EDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly clear (15-25 percent). Min temperature.....54-59. 24 hr trend......6 degrees cooler. Max humidity........95-100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 5 to 10 mph. Gusts up to 20 mph in the evening. Mixing height.......Near Lake Michigan, 2400-2900 ft AGL. Mixing height.......Inland, 4300-4800 ft AGL decreasing to 0-500 ft AGL after midnight. Transport winds.....North 10 to 15 mph. Smoke dispersal.....910 (excellent) decreasing to 70 (poor) after midnight. Pcpn Amount.........None to 0.13 in. .SUNDAY... Sky/weather.........Mostly sunny (25-35 percent). Max temperature.....69-74. 24 hr trend......3 degrees cooler. Min humidity........53-58 percent. 24 hr trend......10 percent drier. 20-foot winds.......Northwest winds 9 to 14 mph. Gusts up to 26 mph in the afternoon. Mixing height.......5300-5800 ft AGL. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....910-1110 (excellent). Pcpn Amount.........none to 0.06 in. .SUNDAY NIGHT... Sky/weather.........Mostly clear (5-15 percent). Min temperature.....50-55. 24 hr trend......5 degrees cooler. Max humidity........95-100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds around 9 mph in the evening becoming light. Mixing height.......4200-4700 ft AGL decreasing to 900-1400 ft AGLafter midnight. Transport winds.....Northwest around 15 mph becoming north around 5 mph after midnight. Smoke dispersal.....940 (excellent) decreasing to 60 (poor) after midnight. Pcpn Amount.........None. .MONDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....72-77. 24 hr trend......3 degrees warmer. Min humidity........47-52 percent. 24 hr trend......6 percent drier. 20-foot winds.......Light winds becoming northwest around 11 mph in the afternoon. Mixing height.......3700-4200 ft AGL near Lake Michigan and 4700-5200 ft AGL Inland. Transport winds.....Northwest around 5 mph increasing to around 15 mph in the afternoon. Smoke dispersal.....520-690 (good to excellent). Pcpn Amount.........None. $$ MIZ051-052-057>059-230830- Montcalm-Gratiot-Kent-Ionia-Clinton- Including the cities of Greenville, Alma, Grand Rapids, Ionia, and St. Johns 217 PM EDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent). Chance of thunderstorms until 8 PM. Chance of rain showers until 9 PM. Chance of pcpn......30 percent early in the evening. Min temperature.....52-57. 24 hr trend......7 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 7 to 12 mph. Gusts up to 22 mph in the evening. Mixing height.......4600-5100 ft AGL decreasing to 100-600 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....960 (excellent) decreasing to 70 (poor) after midnight. Pcpn Amount.........None to 0.22 in. .SUNDAY... Sky/weather.........Mostly sunny (30-40 percent). Slight chance of rain showers after 11 AM. Chance of pcpn......20 percent in the late morning and afternoon. Max temperature.....Around 73. 24 hr trend......1 degree cooler. Min humidity........51-56 percent. 24 hr trend......12 percent drier. 20-foot winds.......Northwest winds 11 to 16 mph with gusts to around 27 mph. Mixing height.......5500-6000 ft AGL. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....940-1140 (excellent). Pcpn Amount.........none to 0.03 in. .SUNDAY NIGHT... Sky/weather.........Partly cloudy (30-40 percent) until 9 PM, then mostly clear (5-15 percent). Min temperature.....48-53. 24 hr trend......4 degrees cooler. Max humidity........99 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 7 to 12 mph. Gusts up to 22 mph in the evening. Mixing height.......4700-5200 ft AGL decreasing to 1000-1500 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....1060 (excellent) decreasing to 110 (poor) after midnight. Pcpn Amount.........none to 0.02 in. .MONDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....75-80. 24 hr trend......4 degrees warmer. Min humidity........40-45 percent. 24 hr trend......11 percent drier. 20-foot winds.......Northwest winds 8 to 13 mph. Gusts up to 23 mph in the afternoon. Mixing height.......3600-4100 ft AGL increasing to 6800-7300 ft AGL in the afternoon. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....630-1140 (excellent). Pcpn Amount.........None. $$ MIZ065>067-072>074-230830- Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson- Including the cities of Hastings, Charlotte, Lansing, Kalamazoo, Battle Creek, and Jackson 217 PM EDT Sat Aug 22 2026.TONIGHT... Sky/weather.........Partly cloudy (20-30 percent). Chance of thunderstorms until 8 PM. Chance of rain showers until 9 PM. Chance of pcpn......30 percent early in the evening. Min temperature.....52-57. 24 hr trend......8 degrees cooler. Max humidity........98 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds 6 to 11 mph. Gusts up to 21 mph in the evening. Mixing height.......4400-4900 ft AGL decreasing to 0-500 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....920 (excellent) decreasing to 60 (poor) after midnight. Pcpn Amount.........None to 0.18 in. .SUNDAY... Sky/weather.........Mostly sunny (25-35 percent). Max temperature.....Around 74. 24 hr trend......1 degree cooler. Min humidity........48-53 percent. 24 hr trend......9 percent drier. 20-foot winds.......Northwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Mixing height.......5600-6100 ft AGL. Transport winds.....Northwest 15 to 20 mph. Smoke dispersal.....870-1170 (excellent). Pcpn Amount.........none to 0.02 in. .SUNDAY NIGHT... Sky/weather.........Mostly clear (10-20 percent). Min temperature.....Around 51. 24 hr trend......4 degrees cooler. Max humidity........95-100 percent. 24 hr trend......Unchanged. 20-foot winds.......Northwest winds around 10 mph and gusty in the evening becoming light. Mixing height.......4500-5000 ft AGL decreasing to 400-900 ft AGL after midnight. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....960 (excellent) decreasing to 70 (poor) after midnight. Pcpn Amount.........none to 0.01 in. .MONDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....Around 77. 24 hr trend......4 degrees warmer. Min humidity........39-44 percent. 24 hr trend......11 percent drier. 20-foot winds.......Northwest winds 6 to 11 mph. Gusts up to 21 mph in the afternoon. Mixing height.......3500-4000 ft AGL increasing to 5900-6400 ft AGL in the afternoon. Transport winds.....Northwest 10 to 15 mph. Smoke dispersal.....530-1050 (good to excellent). Pcpn Amount.........None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. Northwest winds 5 to 9 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs around 80. West winds 5 to 6 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 50s. Southwest winds 5 to 9 mph. .WEDNESDAY...Partly sunny. Chance of showers. Highs in the lower 80s. Southwest winds 6 to 11 mph. .WEDNESDAY NIGHT...Partly cloudy. Chance of showers. Lows in the lower 60s. Southwest winds 5 to 10 mph. .THURSDAY...Mostly sunny. Highs around 80. West winds 6 to 11 mph. .THURSDAY NIGHT...Mostly clear. Chance of showers in the evening. Lows in the upper 50s. .FRIDAY...Mostly sunny. Highs around 80. .FRIDAY NIGHT...Mostly clear. Lows in the upper 50s. .SATURDAY...Mostly sunny. Highs in the lower 80s. $$