Sumner, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, WI in one place.
Sunny, with a high near 76. Southeast wind 5 to 10 mph.
Local Weather Overview
This forecast page for Sumner, 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: Apr 21, 2026 11:15 PM CDT.
The active forecast window currently covers Apr 22 to Apr 28, 2026 for Sumner, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 28, 2026
- Latest sync
- Apr 21, 2026 11:15 PM CDT
- Forecast office
- MPX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Thursday looks like the warmest upcoming period in Sumner at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Thursday at about 10 to 15 mph SSE.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 11:15 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MPX
- Radar station
- KMPX
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 59. South southeast wind around 10 mph.
A chance of rain showers between 1pm and 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Rain showers likely. Mostly sunny, with a high near 64. West wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 7pm. Mostly clear, with a low around 40. Northwest wind 0 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 63. Northwest wind 0 to 5 mph.
Partly cloudy, with a low around 41. Northeast wind 0 to 5 mph.
A slight chance of rain showers after 1pm. Partly sunny, with a high near 64. East southeast wind 0 to 10 mph. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 45. East southeast wind 5 to 10 mph. Chance of precipitation is 40%.
A chance of rain showers. Mostly cloudy, with a high near 60. East southeast wind 10 to 15 mph. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a low around 41. East northeast wind 5 to 10 mph. Chance of precipitation is 50%.
A chance of rain showers. Partly sunny, with a high near 59. Northwest wind 5 to 10 mph. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Sunny
|
76°F |
5 to 10 mph
SE
|
|
Wednesday Night
Apr 22
|
Partly Cloudy
|
59°F |
10 mph
SSE
|
|
Thursday
Apr 23
|
Partly Sunny then Chance Showers And Thunderstorms
|
78°F |
10 to 15 mph
SSE
|
|
Thursday Night
Apr 23
|
Showers And Thunderstorms
|
54°F |
5 to 15 mph
S
|
|
Friday
Apr 24
|
Rain Showers Likely
|
64°F |
5 to 10 mph
W
|
|
Friday Night
Apr 24
|
Chance Rain Showers then Mostly Clear
|
40°F |
0 to 10 mph
NW
|
|
Saturday
Apr 25
|
Sunny
|
63°F |
0 to 5 mph
NW
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
41°F |
0 to 5 mph
NE
|
|
Sunday
Apr 26
|
Partly Sunny then Slight Chance Rain Showers
|
64°F |
0 to 10 mph
ESE
|
|
Sunday Night
Apr 26
|
Chance Rain Showers
|
45°F |
5 to 10 mph
ESE
|
|
Monday
Apr 27
|
Chance Rain Showers
|
60°F |
10 to 15 mph
ESE
|
|
Monday Night
Apr 27
|
Chance Rain Showers
|
41°F |
5 to 10 mph
ENE
|
|
Tuesday
Apr 28
|
Chance Rain Showers
|
59°F |
5 to 10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.