Sumner, WI Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, WI in one place.
Showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 81, with temperatures falling to around 78 in the afternoon. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
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: Jun 7, 2026 2:21 AM CDT.
The active forecast window currently covers Jun 8 to Jun 13, 2026 for Sumner, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 13, 2026
- Latest sync
- Jun 7, 2026 2:21 AM CDT
- Forecast office
- MPX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Wednesday looks like the warmest upcoming period in Sumner at 93 degrees F.
Friday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 7, 2026 2:21 AM CDT
- Coverage
- 6 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
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Mostly cloudy, with a low around 64. Southeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers between 7am and 8am, then a slight chance of showers and thunderstorms between 8am and 1pm. Partly sunny, with a high near 88. Southeast wind 0 to 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy. Low around 71, with temperatures rising to around 74 overnight. Southeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Showers and thunderstorms. Partly cloudy, with a low around 67. South southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. West southwest wind 5 to 15 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. West southwest wind 5 to 10 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. West southwest wind 5 to 15 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. West southwest wind 5 to 10 mph. Chance of precipitation is 30%.
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 79. West wind 5 to 10 mph. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Jun 8
|
Showers And Thunderstorms
|
81°F |
5 to 10 mph
SE
|
|
Monday Night
Jun 8
|
Chance Showers And Thunderstorms
|
64°F |
0 to 5 mph
SE
|
|
Tuesday
Jun 9
|
Slight Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
SE
|
|
Tuesday Night
Jun 9
|
Slight Chance Showers And Thunderstorms
|
71°F |
5 to 10 mph
SE
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
93°F |
10 to 15 mph
S
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms
|
67°F |
5 to 15 mph
SSW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
85°F |
5 to 15 mph
WSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
62°F |
5 to 10 mph
WSW
|
|
Friday
Jun 12
|
Slight Chance Showers And Thunderstorms
|
82°F |
5 to 15 mph
WSW
|
|
Friday Night
Jun 12
|
Chance Showers And Thunderstorms
|
59°F |
5 to 10 mph
WSW
|
|
Saturday
Jun 13
|
Chance Showers And Thunderstorms
|
79°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.