751
FNUS53 KGRR 180820
FWFGRR

Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
420 AM EDT Fri Sep 18 2026

...Dry today then rain Saturday...

.DISCUSSION...
High pressure will dominate the weather today after a rainy day
Thursday. It will bring dry and seasonable weather to all of the
area. A system will approach the area this evening, and move
through on Saturday. This system will bring rain to all of the area.

MIZ037>039-043>045-182015-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
420 AM EDT Fri Sep 18 2026

.TODAY...
Sky/weather.........Mostly sunny (40-50 percent) until 3 PM, then
                    mostly cloudy (70-80 percent).
Max temperature.....68-73.
   24 hr trend......1 degree cooler.
Min humidity........47-52 percent.
   24 hr trend......8 percent drier.
20-foot winds.......Northeast winds 5 to 8 mph.
Mixing height.......1700-2200 ft AGL increasing to 4100-4600 ft AGL
                    in the afternoon.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....240-400 (fair to good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Cloudy (85-95 percent). Chance of rain showers
                    after 8 PM until 5 AM. Rain showers likely
                    after 5 AM.
Chance of pcpn......60 percent.
Min temperature.....40-45.
   24 hr trend......3 degrees cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds 5 to 9 mph.
Mixing height.......2800-3300 ft AGL.
Transport winds.....East 10 to 15 mph.
Smoke dispersal.....190-330 (fair to good).
Pcpn Amount.........0.02-0.26 in.

.SATURDAY...
Sky/weather.........Mostly cloudy (80-90 percent). Chance of rain
                    showers until 8 AM, then rain showers likely
                    until 10 AM, then a chance of rain showers.
Chance of pcpn......70 percent.
Max temperature.....62-67.
   24 hr trend......6 degrees cooler.
Min humidity........65-70 percent.
   24 hr trend......18 percent wetter.
20-foot winds.......East winds 6 to 11 mph. Gusts up to 20 mph in
                    the afternoon.
Mixing height.......2800-3300 ft AGL.
Transport winds.....East around 15 mph.
Smoke dispersal.....220-440 (fair to good).
Pcpn Amount.........0.10-0.63 in.


$$

MIZ040-046-182015-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
420 AM EDT Fri Sep 18 2026

.TODAY...
Sky/weather.........Sunny (20-30 percent) until 12 PM, then partly
                    sunny (60-70 percent).
Max temperature.....Around 69.
   24 hr trend......4 degrees cooler.
Min humidity........47-52 percent.
   24 hr trend......8 percent drier.
20-foot winds.......Northeast winds 5 to 8 mph.
Mixing height.......2000-2500 ft AGL increasing to 4200-4700 ft AGL
                    in the afternoon.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....270-450 (fair to good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Cloudy (85-95 percent). Chance of rain showers
                    after 9 PM.
Chance of pcpn......30 percent in the late evening and
overnight.
Min temperature.....38-43.
   24 hr trend......3 degrees cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds around 6 mph in the evening becoming
                    light.
Mixing height.......2700-3200 ft AGL decreasing to 500-1000 ft AGL
                    after midnight.
Transport winds.....East around 10 mph.
Smoke dispersal.....110-360 (poor to good).
Pcpn Amount.........none to 0.03 in.

.SATURDAY...
Sky/weather.........Mostly cloudy (80-90 percent). Rain showers
                    likely after 8 AM until 10 AM, then a chance of
                    rain showers.
Chance of pcpn......60 percent.
Max temperature.....Around 64.
   24 hr trend......5 degrees cooler.
Min humidity........67-72 percent.
   24 hr trend......20 percent wetter.
20-foot winds.......East winds 5 to 9 mph.
Mixing height.......3000-3500 ft AGL.
Transport winds.....East 10 to 15 mph.
Smoke dispersal.....210-430 (fair to good).
Pcpn Amount.........0.09-0.45 in.


$$

MIZ050-056-064-071-182015-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
420 AM EDT Fri Sep 18 2026

.TODAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....70-75.
   24 hr trend......1 degree cooler.
Min humidity........49-54 percent.
   24 hr trend......30 percent drier.
20-foot winds.......Northeast winds 5 to 9 mph.
Mixing height.......1500-2000 ft AGL increasing to 4100-4600 ft AGL
                    in the afternoon.
Transport winds.....East around 10 mph.
Smoke dispersal.....230-440 (fair to good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (65-75 percent) until 9 PM, then
                    mostly cloudy (80-90 percent). Chance of rain
                    showers after 10 PM. Slight chance of
                    thunderstorms after 5 AM.
Chance of pcpn......30 percent in the late evening and
overnight.
Min temperature.....48-53.
   24 hr trend......4 degrees cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds 5 to 10 mph.
Mixing height.......2900-3400 ft AGL.
Transport winds.....East 10 to 15 mph.
Smoke dispersal.....230-340 (fair to good).
Pcpn Amount.........0.09-0.24 in.

.SATURDAY...
Sky/weather.........Cloudy (85-95 percent). Rain showers until 1
                    PM. Chance of rain showers after 1 PM until 2
                    PM, then rain showers.
Chance of pcpn......90 percent.
Max temperature.....65-70.
   24 hr trend......5 degrees cooler.
Min humidity........75-80 percent.
   24 hr trend......26 percent wetter.
20-foot winds.......East winds 7 to 12 mph and gusty.
Mixing height.......1900-2400 ft AGL.
Transport winds.....East around 15 mph.
Smoke dispersal.....250-320 (fair to good).
Pcpn Amount.........0.57-0.95 in.


$$

MIZ051-052-057>059-182015-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
420 AM EDT Fri Sep 18 2026

.TODAY...
Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 72.
   24 hr trend......1 degree cooler.
Min humidity........53-58 percent.
   24 hr trend......25 percent drier.
20-foot winds.......Northeast winds 5 to 10 mph.
Mixing height.......1600-2100 ft AGL increasing to 4100-4600 ft AGL
                    in the afternoon.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....240-480 (fair to good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain
                    showers after 1 AM.
Chance of pcpn......30 percent after midnight.
Min temperature.....46-51.
   24 hr trend......3 degrees cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds 6 to 11 mph.
Mixing height.......3100-3600 ft AGL decreasing to 800-1300 ft AGL
                    after midnight.
Transport winds.....East around 15 mph.
Smoke dispersal.....180-400 (fair to good).
Pcpn Amount.........0.01-0.15 in.

.SATURDAY...
Sky/weather.........Cloudy (85-95 percent). Rain showers likely.
Chance of pcpn......70 percent.
Max temperature.....61-66.
   24 hr trend......9 degrees cooler.
Min humidity........74-79 percent.
   24 hr trend......21 percent wetter.
20-foot winds.......East winds 6 to 11 mph.
Mixing height.......2400-2900 ft AGL.
Transport winds.....East around 15 mph.
Smoke dispersal.....220-350 (fair to good).
Pcpn Amount.........0.16-0.74 in.


$$

MIZ065>067-072>074-182015-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
420 AM EDT Fri Sep 18 2026

.TODAY...
Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 73.
   24 hr trend......2 degrees cooler.
Min humidity........51-56 percent.
   24 hr trend......31 percent drier.
20-foot winds.......Northeast winds 5 to 10 mph.
Mixing height.......1600-2100 ft AGL increasing to 4200-4700 ft AGL
                    in the afternoon.
Transport winds.....Northeast around 10 mph.
Smoke dispersal.....260-450 (fair to good).
Pcpn Amount.........None.

.TONIGHT...
Sky/weather.........Partly cloudy (55-65 percent) until 9 PM, then
                    mostly cloudy (75-85 percent).
Min temperature.....50-55.
   24 hr trend......3 degrees cooler.
Max humidity........95-100 percent.
   24 hr trend......Unchanged.
20-foot winds.......East winds 5 to 10 mph.
Mixing height.......3600-4100 ft AGL decreasing to 800-1300 ft AGL
                    after midnight.
Transport winds.....East around 10 mph.
Smoke dispersal.....190-420 (fair to good).
Pcpn Amount.........None to 0.12 in.

.SATURDAY...
Sky/weather.........Cloudy (85-95 percent). Rain showers.
Chance of pcpn......90 percent.
Max temperature.....Around 65.
   24 hr trend......8 degrees cooler.
Min humidity........72-77 percent.
   24 hr trend......21 percent wetter.
20-foot winds.......East winds 6 to 11 mph.
Mixing height.......1200-1700 ft AGL.
Transport winds.....Southeast 10 to 15 mph.
Smoke dispersal.....190-280 (fair).
Pcpn Amount.........0.27-0.75 in.


$$

.FORECAST FOR DAYS 3 THROUGH 7...

.SATURDAY NIGHT...Mostly cloudy. Chance of showers and a slight
chance of thunderstorms in the evening, then a chance of showers
after midnight. Lows in the lower 50s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with a chance of showers. Highs in the mid
60s. Northeast winds 6 to 11 mph.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s. Northeast winds
6 to 11 mph.
.MONDAY...Mostly cloudy with a chance of showers. Highs in the lower
60s. Northeast winds 8 to 13 mph.
.MONDAY NIGHT...Mostly cloudy. Lows in the mid 40s. Northeast winds
7 to 12 mph.
.TUESDAY...Partly sunny with a chance of showers. Highs in the lower
60s. Northeast winds 8 to 13 mph.
.TUESDAY NIGHT...Partly cloudy with a chance of showers. Lows in the
mid 40s.
.WEDNESDAY...Partly sunny. Highs in the mid 60s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 40s.
.THURSDAY...Partly sunny. Highs in the upper 60s.

$$