National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Aug-04-2026 2:46pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Mostly Cloudy
Mostly Cloudy
Wednesday

Wednesday: Patchy Fog
Patchy Fog
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday

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

Monday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
 
Hi 83 °F Hi 75 °F Hi 79 °F Hi 81 °F Hi 81 °F Hi 82 °F Hi 82 °F  
 
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Mostly Cloudy
Slight Chance Showers And T-Storms then Mostly Cloudy
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 63 °F Lo 56 °F Lo 58 °F Lo 63 °F Lo 63 °F Lo 65 °F Lo 63 °F  

 

This Afternoon
 
Mostly cloudy, with a high near 83. Southwest wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely between 8pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and thunderstorms likely between 1am and 4am, then patchy fog and showers and thunderstorms. Mostly cloudy, with a low around 63. Northwest wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
Patchy fog and showers and thunderstorms likely before 8am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Northwest wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
 
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 56. West wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
Mostly sunny, with a high near 79. Northeast wind around 0 mph.
Thursday Night
 
Mostly clear, with a low around 58. South wind around 0 mph.
Friday
 
Sunny, with a high near 81. Southwest wind 0 to 10 mph.
Friday Night
 
A slight chance of rain showers after 7pm. Mostly clear, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 20%.
Saturday
 
A slight chance of rain showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Saturday Night
 
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Sunday
 
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Sunday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 50%.
Monday
 
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Monday Night
 
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.