Sumner, MI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, MI in one place.
Sunny, with a high near 85.
Local Weather Overview
This forecast page for Sumner, 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: May 23, 2026 3:23 AM EDT.
The active forecast window currently covers May 26 to May 29, 2026 for Sumner, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 26 to May 29, 2026
- Latest sync
- May 23, 2026 3:23 AM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Tuesday looks like the warmest upcoming period in Sumner at 85 degrees F.
Thursday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Friday at about 3 to 13 mph NE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- May 23, 2026 3:23 AM EDT
- Coverage
- 4 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
Partly cloudy, with a low around 58.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 83.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 55.
Mostly sunny, with a high near 80.
Mostly clear, with a low around 53.
Sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Sunny
|
85°F |
2 to 7 mph
SW
|
|
Tuesday Night
May 26
|
Partly Cloudy
|
58°F |
2 to 6 mph
NW
|
|
Wednesday
May 27
|
Mostly Sunny then Slight Chance Rain Showers
|
83°F |
2 to 10 mph
NE
|
|
Wednesday Night
May 27
|
Slight Chance Rain Showers then Partly Cloudy
|
55°F |
3 to 10 mph
ENE
|
|
Thursday
May 28
|
Mostly Sunny
|
80°F |
3 to 10 mph
NE
|
|
Thursday Night
May 28
|
Mostly Clear
|
53°F |
3 to 10 mph
NE
|
|
Friday
May 29
|
Sunny
|
79°F |
3 to 13 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.