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National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Oct-01-2026 6:31pm CDT
Cottage Grove
 
  Friday

Friday: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Sunny
Sunny
  Hi 63 °F Hi 66 °F Hi 68 °F Hi 63 °F Hi 66 °F Hi 71 °F Hi 70 °F
 
Tonight

Tonight: Chance Rain Showers then Mostly Cloudy
Chance Rain Showers then Mostly Cloudy
Friday
Night
Friday Night: Clear
Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Clear
Clear
Monday
Night
Monday Night: Clear
Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
 
Lo 46 °F Lo 39 °F Lo 47 °F Lo 39 °F Lo 39 °F Lo 49 °F Lo 49 °F  

 

Tonight
 
 A chance of rain showers before 9pm. Mostly cloudy, with a low around 46. Northwest wind 5 to 10 mph. Chance of precipitation is 40%.
Friday
 
 Sunny, with a high near 63. North wind 5 to 10 mph.
Friday Night
 
 Clear, with a low around 39. East wind 0 to 5 mph.
Saturday
 
 Sunny, with a high near 66. South wind 0 to 10 mph.
Saturday Night
 
 Partly cloudy, with a low around 47. Southwest wind around 5 mph.
Sunday
 
 Sunny, with a high near 68. West wind 5 to 10 mph.
Sunday Night
 
 Clear, with a low around 39. Northwest wind 0 to 5 mph.
Monday
 
 Sunny, with a high near 63. North wind 0 to 5 mph.
Monday Night
 
 Clear, with a low around 39.
Tuesday
 
 Sunny, with a high near 66.
Tuesday Night
 
 Mostly clear, with a low around 49.
Wednesday
 
 Mostly sunny, with a high near 71.
Wednesday Night
 
 Mostly clear, with a low around 49.
Thursday
 
 Sunny, with a high near 70.

 

Forecast from NOAA-NWS for Cottage Grove, WI.