National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Sep-22-2026 11:31am CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Chance Rain Showers
Chance Rain Showers
Wednesday

Wednesday: Partly Sunny
Partly Sunny
Thursday

Thursday: Partly Sunny
Partly Sunny
Friday

Friday: Partly Sunny
Partly Sunny
Saturday

Saturday: Partly Sunny
Partly Sunny
Sunday

Sunday: Slight Chance Rain Showers then Mostly Cloudy
Slight Chance Rain Showers then Mostly Cloudy
Monday

Monday: Partly Sunny
Partly Sunny
 
Hi 61 °F Hi 65 °F Hi 66 °F Hi 67 °F Hi 66 °F Hi 69 °F Hi 72 °F  
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday
Night
Saturday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday
Night
Monday Night: Partly Cloudy then Slight Chance Rain Showers
Partly Cloudy then Slight Chance Rain Showers
 
Lo 47 °F Lo 48 °F Lo 48 °F Lo 46 °F Lo 49 °F Lo 53 °F Lo 56 °F  

 

This Afternoon
 
A chance of rain showers before 1pm. Partly sunny, with a high near 61. East wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
Partly cloudy, with a low around 47. Northeast wind around 5 mph.
Wednesday
 
Partly sunny, with a high near 65. Northeast wind 5 to 10 mph.
Wednesday Night
 
Partly cloudy, with a low around 48. East wind 0 to 10 mph.
Thursday
 
Partly sunny, with a high near 66. East wind 0 to 5 mph.
Thursday Night
 
Mostly cloudy, with a low around 48. East wind 0 to 5 mph.
Friday
 
Partly sunny, with a high near 67. East wind 0 to 5 mph.
Friday Night
 
Mostly cloudy, with a low around 46. East wind 0 to 5 mph.
Saturday
 
Partly sunny, with a high near 66.
Saturday Night
 
A slight chance of rain showers after 7pm. Mostly cloudy, with a low around 49. Chance of precipitation is 20%.
Sunday
 
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 69. Chance of precipitation is 20%.
Sunday Night
 
Mostly cloudy, with a low around 53.
Monday
 
Partly sunny, with a high near 72.
Monday Night
 
A slight chance of rain showers after 1am. Partly cloudy, with a low around 56. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.