Sullivan, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sullivan, WI in one place.
Sunny, with a high near 95. West wind 0 to 5 mph.
Local Weather Overview
This forecast page for Sullivan, WI 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 12, 2026 3:52 AM CDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Sullivan, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 3:52 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan
Tuesday looks like the warmest upcoming period in Sullivan at 95 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 12, 2026 3:52 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
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 70. West wind around 5 mph.
Sunny, with a high near 92. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 66.
Sunny, with a high near 90.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
A slight chance of rain showers before 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
95°F |
0 to 5 mph
W
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
70°F |
5 mph
W
|
|
Wednesday
Jul 15
|
Sunny
|
92°F |
0 to 5 mph
NW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
66°F |
0 to 5 mph
NE
|
|
Thursday
Jul 16
|
Sunny
|
90°F |
0 to 5 mph
NW
|
|
Thursday Night
Jul 16
|
Partly Cloudy then Slight Chance Rain Showers
|
67°F |
5 mph
SE
|
|
Friday
Jul 17
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
SE
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
67°F |
5 to 10 mph
SE
|
|
Saturday
Jul 18
|
Slight Chance Rain Showers
|
89°F |
5 to 15 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sullivan.
