National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sat, Aug-08-2026 9:31am CDT
Cottage Grove
 
Today

Today: Sunny
Sunny
Sunday

Sunday: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
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
Chance Showers And T-Storms
Thursday

Thursday: Partly Sunny
Partly Sunny
Friday

Friday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Hi 80 °F Hi 79 °F Hi 83 °F Hi 82 °F Hi 80 °F Hi 77 °F Hi 75 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
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: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 62 °F Lo 67 °F Lo 64 °F Lo 63 °F Lo 60 °F Lo 56 °F Lo 56 °F  

 

Today
 
Sunny, with a high near 80. Northwest wind 5 to 10 mph.
Tonight
 
Mostly clear, with a low around 62. Southwest wind around 5 mph.
Sunday
 
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 9am, then showers and thunderstorms likely between 9am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. 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
 
Showers and thunderstorms likely before 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Northeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night
 
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday
 
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
 
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. East wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday
 
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Wednesday Night
 
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Thursday
 
Partly sunny, with a high near 77.
Thursday Night
 
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 20%.
Friday
 
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
Friday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.