National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, May-05-2026 9:32am CDT
Cottage Grove
 
Today

Today: Partly Sunny
Partly Sunny
Wednesday

Wednesday: Areas Of Frost then Mostly Sunny
Areas Of Frost then Mostly Sunny
Thursday

Thursday: Areas Of Frost then Slight Chance Rain Showers
Areas Of Frost then Slight Chance Rain Showers
Friday

Friday: Partly Sunny then Chance Rain Showers
Partly Sunny then Chance Rain Showers
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Chance Rain Showers
Chance Rain Showers
Monday

Monday: Mostly Sunny
Mostly Sunny
 
Hi 57 °F Hi 54 °F Hi 60 °F Hi 65 °F Hi 70 °F Hi 63 °F Hi 64 °F  
 
Tonight

Tonight: Partly Cloudy then Areas Of Frost
Partly Cloudy then Areas Of Frost
Wednesday
Night
Wednesday Night: Partly Cloudy then Areas Of Frost
Partly Cloudy then Areas Of Frost
Thursday
Night
Thursday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Friday
Night
Friday Night: Chance Rain Showers
Chance Rain Showers
Saturday
Night
Saturday Night: Chance Rain Showers
Chance Rain Showers
Sunday
Night
Sunday Night: Chance Rain Showers then Partly Cloudy
Chance Rain Showers then Partly Cloudy
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
 
Lo 35 °F Lo 35 °F Lo 41 °F Lo 42 °F Lo 46 °F Lo 40 °F Lo 43 °F  

 

Today
 
Partly sunny, with a high near 57. Northwest wind 10 to 15 mph.
Tonight
 
Areas of frost after 4am. Partly cloudy, with a low around 35. Northwest wind 5 to 10 mph.
Wednesday
 
Areas of frost before 7am. Mostly sunny, with a high near 54. Northwest wind 5 to 10 mph.
Wednesday Night
 
Areas of frost after 2am. Partly cloudy, with a low around 35. West wind 0 to 10 mph.
Thursday
 
Areas of frost before 8am, then a slight chance of rain showers. Mostly sunny, with a high near 60. West wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 41. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Friday
 
A chance of rain showers after 1pm. Partly sunny, with a high near 65. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
A chance of rain showers before 1am. Partly cloudy, with a low around 42. West wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Sunny, with a high near 70.
Saturday Night
 
A chance of rain showers after 7pm. Partly cloudy, with a low around 46. Chance of precipitation is 30%.
Sunday
 
A chance of rain showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.
Sunday Night
 
A chance of rain showers before 7pm. Partly cloudy, with a low around 40. Chance of precipitation is 30%.
Monday
 
Mostly sunny, with a high near 64.
Monday Night
 
Partly cloudy, with a low around 43.

 

Forecast from NOAA-NWS for Cottage Grove, WI.