Allegan, MI Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Allegan, MI in one place.
Mostly sunny, with a high near 80. South southwest wind 3 to 7 mph.
Local Weather Overview
This forecast page for Allegan, MI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 11:28 PM EDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Allegan, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 27, 2026 11:28 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Allegan
Monday looks like the warmest upcoming period in Allegan at 85 degrees F.
Saturday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 11:28 PM EDT
- Coverage
- 6 days
- Time zone
- America/Detroit
- Forecast office
- GRR
- Radar station
- KGRR
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 2am. Mostly cloudy, with a low around 66. South southwest wind around 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 8am. Partly sunny, with a high near 84. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 8pm and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
A chance of showers and thunderstorms before 8am. Partly sunny, with a high near 85.
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 72.
A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms between 8am and 2pm. Partly sunny, with a high near 85.
A slight chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 69.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67.
A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms between 8am and 2pm. Mostly sunny, with a high near 83.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny
|
80°F |
3 to 7 mph
SSW
|
|
Saturday Night
Aug 29
|
Mostly Cloudy then Chance Rain Showers
|
66°F |
5 mph
SSW
|
|
Sunday
Aug 30
|
Chance Rain Showers then Partly Sunny
|
84°F |
5 to 10 mph
SSW
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms
|
71°F |
6 to 9 mph
SSW
|
|
Monday
Aug 31
|
Chance Showers And Thunderstorms then Partly Sunny
|
85°F |
9 mph
SSW
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
72°F |
7 mph
SW
|
|
Tuesday
Sep 1
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
85°F |
5 to 8 mph
SW
|
|
Tuesday Night
Sep 1
|
Slight Chance Showers And Thunderstorms
|
69°F |
1 to 6 mph
SW
|
|
Wednesday
Sep 2
|
Slight Chance Showers And Thunderstorms
|
84°F |
2 to 6 mph
SW
|
|
Wednesday Night
Sep 2
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
67°F |
1 to 5 mph
WSW
|
|
Thursday
Sep 3
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
83°F |
1 to 6 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Allegan.
