Sullivan, MI Weather Forecast
Local 7-day forecast
Slight Chance Snow Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Sullivan, MI in one place.
A slight chance of snow showers before 2pm. Partly sunny, with a high near 44.
Local Weather Overview
This forecast page for Sullivan, 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: Apr 15, 2026 3:30 PM EDT.
The active forecast window currently covers Apr 19 to Apr 21, 2026 for Sullivan, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:30 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan
Tuesday looks like the warmest upcoming period in Sullivan at 61 degrees F.
Sunday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Sunday at about 12 to 16 mph WNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 3:30 PM EDT
- Coverage
- 3 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 29.
Sunny, with a high near 51.
Partly cloudy, with a low around 39.
Mostly sunny, with a high near 61.
A slight chance of rain showers after 8pm. Partly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Slight Chance Snow Showers
|
44°F |
12 to 16 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
29°F |
6 to 13 mph
NW
|
|
Monday
Apr 20
|
Sunny
|
51°F |
6 to 9 mph
W
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
39°F |
6 to 9 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
61°F |
9 to 14 mph
SW
|
|
Tuesday Night
Apr 21
|
Slight Chance Rain Showers
|
45°F |
7 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sullivan.