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National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, Oct-02-2026 8:51pm CDT
Cottage Grove
 
  Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Sunny
Sunny
  Hi 66 °F Hi 68 °F Hi 64 °F Hi 67 °F Hi 71 °F Hi 70 °F Hi 69 °F
 
Tonight

Tonight: Clear
Clear
Saturday
Night
Saturday Night: Chance Rain Showers
Chance Rain Showers
Sunday
Night
Sunday Night: Clear
Clear
Monday
Night
Monday Night: Clear
Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
 
Lo 39 °F Lo 48 °F Lo 41 °F Lo 40 °F Lo 48 °F Lo 48 °F Lo 48 °F  

 

Tonight
 
 Clear, with a low around 39. East wind around 0 mph.
Saturday
 
 Mostly sunny, with a high near 66. Southeast wind 0 to 10 mph.
Saturday Night
 
 A chance of rain showers between 10pm and 2am. Partly cloudy, with a low around 48. South wind around 5 mph. Chance of precipitation is 20%.
Sunday
 
 Sunny, with a high near 68. West wind 5 to 10 mph.
Sunday Night
 
 Clear, with a low around 41. Northwest wind around 5 mph.
Monday
 
 Sunny, with a high near 64. North wind around 0 mph.
Monday Night
 
 Clear, with a low around 40. Southeast wind around 0 mph.
Tuesday
 
 Sunny, with a high near 67. South wind 5 to 15 mph.
Tuesday Night
 
 Mostly clear, with a low around 48.
Wednesday
 
 Mostly sunny, with a high near 71.
Wednesday Night
 
 Partly cloudy, with a low around 48.
Thursday
 
 Mostly sunny, with a high near 70.
Thursday Night
 
 Partly cloudy, with a low around 48.
Friday
 
 Sunny, with a high near 69.

 

Forecast from NOAA-NWS for Cottage Grove, WI.