National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Nov-12-2026 3:33pm CST
Cottage Grove
 
This
Afternoon
This Afternoon: Mostly Cloudy
Mostly Cloudy
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
 
Hi 41 °F Hi 41 °F Hi 45 °F Hi 47 °F Hi 50 °F Hi 53 °F Hi 55 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
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
 
Lo 27 °F Lo 25 °F Lo 26 °F Lo 27 °F Lo 28 °F Lo 32 °F Lo 39 °F  

 

This Afternoon
 
Mostly cloudy, with a high near 41. North wind 10 to 15 mph.
Tonight
 
Mostly cloudy, with a low around 27. North wind around 10 mph.
Friday
 
Mostly sunny, with a high near 41. North wind 10 to 15 mph.
Friday Night
 
Partly cloudy, with a low around 25. North wind around 5 mph.
Saturday
 
Sunny. High near 45, with temperatures falling to around 40 in the afternoon. Northwest wind 0 to 5 mph.
Saturday Night
 
Mostly clear, with a low around 26. Northwest wind around 0 mph.
Sunday
 
Sunny. High near 47, with temperatures falling to around 42 in the afternoon. Northwest wind 0 to 5 mph.
Sunday Night
 
Clear, with a low around 27. Wind around 0 mph.
Monday
 
Sunny. High near 50, with temperatures falling to around 45 in the afternoon.
Monday Night
 
Clear, with a low around 28.
Tuesday
 
Sunny. High near 53, with temperatures falling to around 48 in the afternoon.
Tuesday Night
 
Mostly clear, with a low around 32.
Wednesday
 
Mostly sunny, with a high near 55.
Wednesday Night
 
Partly cloudy, with a low around 39.

 

Forecast from NOAA-NWS for Cottage Grove, WI.