National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, Aug-07-2026 10:32am CDT
Cottage Grove
 
Today

Today: Partly Sunny
Partly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

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

Monday: Showers And Thunderstorms
Showers And T-Storms
Tuesday

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

Wednesday: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Thursday

Thursday: Mostly Sunny
Mostly Sunny
 
Hi 84 °F Hi 81 °F Hi 81 °F Hi 82 °F Hi 79 °F Hi 79 °F Hi 76 °F  
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Mostly Clear then Rain Showers Likely
Mostly Clear then Rain Showers Likely
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And T-Storms Likely then Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
 
Lo 64 °F Lo 62 °F Lo 66 °F Lo 64 °F Lo 60 °F Lo 59 °F Lo 55 °F  

 

Today
 
Partly sunny, with a high near 84. Southwest wind 5 to 10 mph.
Tonight
 
A slight chance of showers and thunderstorms between 10pm and 3am. Mostly cloudy, with a low around 64. West wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Sunny, with a high near 81. Northwest wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
Saturday Night
 
Rain showers likely after 1am. Mostly clear, with a low around 62. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday
 
Rain showers likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
 
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 66. Southwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
Showers and thunderstorms. Mostly cloudy, with a high near 82. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Monday Night
 
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday
 
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Tuesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 40%.
Wednesday
 
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Wednesday Night
 
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59. Chance of precipitation is 20%.
Thursday
 
Mostly sunny, with a high near 76.
Thursday Night
 
Partly cloudy, with a low around 55.

 

Forecast from NOAA-NWS for Cottage Grove, WI.