National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Jun-23-2026 8:37am CDT
Cottage Grove
 
Today

Today: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Showers And Thunderstorms
Showers And T-Storms
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Slight Chance Showers And Thunderstorms then Mostly Sunny
Slight Chance Showers And T-Storms then Mostly Sunny
Sunday

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

Monday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Hi 76 °F Hi 77 °F Hi 75 °F Hi 76 °F Hi 80 °F Hi 86 °F Hi 91 °F  
 
Tonight

Tonight: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Partly Cloudy then Slight Chance Showers And Thunderstorms
Partly Cloudy then Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Partly Cloudy then Chance Showers And Thunderstorms
Partly Cloudy then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 58 °F Lo 56 °F Lo 54 °F Lo 56 °F Lo 63 °F Lo 71 °F Lo 72 °F  

 

Today
 
Mostly sunny, with a high near 76. South wind around 0 mph.
Tonight
 
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday
 
Showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 77. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
 
A chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 56. West wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
Mostly sunny, with a high near 75. Northwest wind around 5 mph.
Thursday Night
 
Partly cloudy, with a low around 54. Northeast wind 0 to 5 mph.
Friday
 
Mostly sunny, with a high near 76. East wind around 5 mph.
Friday Night
 
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. East wind 0 to 5 mph. Chance of precipitation is 20%.
Saturday
 
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 80. Chance of precipitation is 20%.
Saturday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Sunday
 
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Sunday Night
 
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Monday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Monday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.