National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, Sep-16-2026 3:32pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Mostly Cloudy
Mostly Cloudy
Thursday

Thursday: Chance Rain Showers then Cloudy
Chance Rain Showers then Cloudy
Friday

Friday: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Saturday

Saturday: Showers And Thunderstorms
Showers And T-Storms
Sunday

Sunday: Chance Rain Showers
Chance Rain Showers
Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday

Tuesday: Chance Rain Showers
Chance Rain Showers
 
Hi 72 °F Hi 72 °F Hi 70 °F Hi 76 °F Hi 67 °F Hi 64 °F Hi 67 °F  
 
Tonight

Tonight: Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Rain Showers then Slight Chance Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Showers And Thunderstorms
Showers And T-Storms
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And T-Storms Likely then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 59 °F Lo 54 °F Lo 62 °F Lo 59 °F Lo 55 °F Lo 53 °F Lo 53 °F  

 

This Afternoon
 
Mostly cloudy, with a high near 72. East wind around 5 mph.
Tonight
 
A chance of rain showers between 11pm and midnight, then a slight chance of showers and thunderstorms between midnight and 1am, then a chance of showers and thunderstorms between 1am and 3am, then a chance of showers and thunderstorms. Cloudy, with a low around 59. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
A chance of rain showers before 10am. Cloudy, with a high near 72. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night
 
Mostly cloudy, with a low around 54. Northeast wind around 5 mph.
Friday
 
A chance of rain showers after 1pm. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
A chance of rain showers before 7pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 62. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 76. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night
 
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 59. North wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
 
A chance of rain showers. Cloudy, with a high near 67. Chance of precipitation is 50%.
Sunday Night
 
A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Monday
 
A chance of showers and thunderstorms. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.
Monday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Tuesday
 
A chance of rain showers. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.
Tuesday Night
 
A slight chance of rain showers before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.