Decatur, MI Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Decatur, MI in one place.
Partly sunny. High near 80, with temperatures falling to around 78 in the afternoon. North northwest wind 8 to 15 mph, with gusts as high as 29 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: Jul 27, 2026 3:07 PM EDT.
The active forecast window currently covers Jul 28 to Aug 2, 2026 for Decatur, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 28 to Aug 2, 2026
- Latest sync
- Jul 27, 2026 3:07 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur
Thursday looks like the warmest upcoming period in Decatur at 84 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Tuesday at about 8 to 15 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 27, 2026 3:07 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 clear, with a low around 56. North northwest wind 3 to 15 mph, with gusts as high as 30 mph.
Sunny, with a high near 80. North northwest wind 3 to 12 mph, with gusts as high as 24 mph.
Clear, with a low around 57.
Sunny, with a high near 84.
Partly cloudy, with a low around 62.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80.
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 61.
Mostly sunny, with a high near 81.
Mostly clear, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 28
|
Partly Sunny
|
80°F |
8 to 15 mph
NNW
|
|
Tuesday Night
Jul 28
|
Mostly Clear
|
56°F |
3 to 15 mph
NNW
|
|
Wednesday
Jul 29
|
Sunny
|
80°F |
3 to 12 mph
NNW
|
|
Wednesday Night
Jul 29
|
Clear
|
57°F |
0 to 12 mph
NNW
|
|
Thursday
Jul 30
|
Sunny
|
84°F |
0 to 6 mph
SSW
|
|
Thursday Night
Jul 30
|
Partly Cloudy
|
62°F |
0 to 5 mph
WSW
|
|
Friday
Jul 31
|
Chance Showers And Thunderstorms
|
83°F |
1 to 7 mph
SW
|
|
Friday Night
Jul 31
|
Chance Showers And Thunderstorms
|
63°F |
1 to 6 mph
W
|
|
Saturday
Aug 1
|
Chance Rain Showers
|
80°F |
1 to 8 mph
SW
|
|
Saturday Night
Aug 1
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
61°F |
1 to 8 mph
NW
|
|
Sunday
Aug 2
|
Mostly Sunny
|
81°F |
2 to 8 mph
NNW
|
|
Sunday Night
Aug 2
|
Mostly Clear
|
59°F |
1 to 8 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Decatur.