National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, May-26-2026 6:37pm CDT
Cottage Grove
 
  Wednesday

Wednesday: Partly Sunny then Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And T-Storms
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
  Hi 86 °F Hi 78 °F Hi 82 °F Hi 82 °F Hi 80 °F Hi 80 °F Hi 81 °F
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Clear
Clear
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
 
Lo 60 °F Lo 53 °F Lo 48 °F Lo 55 °F Lo 52 °F Lo 52 °F Lo 52 °F  

 

Tonight
 
Mostly cloudy, with a low around 60. Southeast wind 0 to 5 mph.
Wednesday
 
A chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. Northeast wind 0 to 5 mph. Chance of precipitation is 30%.
Wednesday Night
 
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 53. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
 
Sunny, with a high near 78. Northeast wind around 10 mph.
Thursday Night
 
Clear, with a low around 48. East wind 0 to 10 mph.
Friday
 
Sunny, with a high near 82. West wind around 0 mph.
Friday Night
 
Mostly clear, with a low around 55. Northeast wind around 0 mph.
Saturday
 
Sunny, with a high near 82. East wind 0 to 10 mph.
Saturday Night
 
Mostly clear, with a low around 52.
Sunday
 
Sunny, with a high near 80.
Sunday Night
 
Mostly clear, with a low around 52.
Monday
 
Sunny, with a high near 80.
Monday Night
 
Mostly clear, with a low around 52.
Tuesday
 
Sunny, with a high near 81.

 

Forecast from NOAA-NWS for Cottage Grove, WI.