National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, May-27-2026 6:32pm CDT
Cottage Grove
 
  Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
  Hi 77 °F Hi 82 °F Hi 81 °F Hi 81 °F Hi 81 °F Hi 80 °F Hi 82 °F
 
Tonight

Tonight: Scattered Showers And Thunderstorms then Partly Cloudy
Scattered Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
 
Lo 54 °F Lo 47 °F Lo 55 °F Lo 51 °F Lo 54 °F Lo 52 °F Lo 52 °F  

 

Tonight
 
Scattered showers and thunderstorms between 7pm and 11pm. Partly cloudy, with a low around 54. Northeast wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
Sunny, with a high near 77. Northeast wind around 10 mph.
Thursday Night
 
Mostly clear, with a low around 47. Southeast wind 0 to 10 mph.
Friday
 
Sunny, with a high near 82. Southwest wind 0 to 5 mph.
Friday Night
 
Mostly clear, with a low around 55. North wind around 0 mph.
Saturday
 
Sunny, with a high near 81. East wind 0 to 10 mph.
Saturday Night
 
Partly cloudy, with a low around 51. East wind 5 to 10 mph.
Sunday
 
Mostly sunny, with a high near 81. Southeast wind around 5 mph.
Sunday Night
 
Partly cloudy, with a low around 54.
Monday
 
Mostly sunny, with a high near 81.
Monday Night
 
Mostly clear, with a low around 52.
Tuesday
 
Sunny, with a high near 80.
Tuesday Night
 
Mostly clear, with a low around 52.
Wednesday
 
Sunny, with a high near 82.

 

Forecast from NOAA-NWS for Cottage Grove, WI.