Decatur, MI Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Decatur, MI in one place.
Mostly cloudy. High near 67, with temperatures falling to around 65 in the afternoon. East northeast wind 9 to 13 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Decatur, 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: Sep 22, 2026 12:34 PM EDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Decatur, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 12:34 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur
Monday looks like the warmest upcoming period in Decatur at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 44 degrees F.
The strongest winds are forecast for Wednesday at about 9 to 13 mph ENE.
The forecast from Sep 23 through Sep 28 stays mostly dry.
Forecast Details
- Last updated
- Sep 22, 2026 12:34 PM EDT
- Coverage
- 6 days
- Time zone
- America/Detroit
- Forecast office
- GRR
- Radar station
- KIWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 49. East northeast wind 5 to 12 mph, with gusts as high as 25 mph.
Mostly sunny, with a high near 69. East wind 5 to 8 mph, with gusts as high as 18 mph.
Partly cloudy, with a low around 46.
Sunny, with a high near 69.
Mostly clear, with a low around 44.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 46.
Partly sunny, with a high near 73.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 75.
Partly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Mostly Cloudy
|
67°F |
9 to 13 mph
ENE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
49°F |
5 to 12 mph
ENE
|
|
Thursday
Sep 24
|
Mostly Sunny
|
69°F |
5 to 8 mph
E
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
46°F |
2 to 6 mph
E
|
|
Friday
Sep 25
|
Sunny
|
69°F |
2 to 6 mph
E
|
|
Friday Night
Sep 25
|
Mostly Clear
|
44°F |
1 to 5 mph
ENE
|
|
Saturday
Sep 26
|
Mostly Sunny
|
70°F |
3 mph
ESE
|
|
Saturday Night
Sep 26
|
Partly Cloudy
|
46°F |
3 mph
ESE
|
|
Sunday
Sep 27
|
Partly Sunny
|
73°F |
0 to 3 mph
SE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
49°F |
0 to 3 mph
ESE
|
|
Monday
Sep 28
|
Mostly Sunny
|
75°F |
0 to 5 mph
SSE
|
|
Monday Night
Sep 28
|
Partly Cloudy
|
52°F |
1 to 5 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Decatur.