National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, Aug-28-2026 9:31am CDT
Cottage Grove
 
Today

Today: Sunny
Sunny
Saturday

Saturday: Rain Showers Likely
Rain Showers Likely
Sunday

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

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

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

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

Thursday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Hi 82 °F Hi 78 °F Hi 85 °F Hi 87 °F Hi 87 °F Hi 86 °F Hi 85 °F  
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Rain Showers Likely
Rain Showers Likely
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Partly Cloudy then Slight Chance Showers And Thunderstorms
Partly Cloudy then Slight Chance Showers And T-Storms
Thursday
Night
Thursday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 60 °F Lo 66 °F Lo 69 °F Lo 70 °F Lo 67 °F Lo 67 °F Lo 66 °F  

 

Today
 
Sunny, with a high near 82. Southwest wind around 5 mph.
Tonight
 
Partly cloudy, with a low around 60. Southwest wind around 5 mph.
Saturday
 
Rain showers likely after 11am. Mostly cloudy, with a high near 78. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night
 
Rain showers likely before 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Sunday
 
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Sunday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Monday
 
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Southwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Monday Night
 
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
 
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
Wednesday
 
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
Wednesday Night
 
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
Thursday
 
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.