National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Apr-21-2026 2:16pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Rain Showers Likely
Rain Showers Likely
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
 
Hi 74 °F Hi 76 °F Hi 80 °F Hi 72 °F Hi 67 °F Hi 66 °F Hi 64 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday
Night
Friday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
 
Lo 44 °F Lo 56 °F Lo 60 °F Lo 47 °F Lo 44 °F Lo 47 °F Lo 45 °F  

 

This Afternoon
 
Sunny, with a high near 74. West wind 5 to 10 mph.
Tonight
 
Mostly clear, with a low around 44. North wind around 5 mph.
Wednesday
 
Sunny, with a high near 76. East wind 5 to 10 mph.
Wednesday Night
 
Partly cloudy, with a low around 56. Southeast wind 5 to 10 mph.
Thursday
 
Mostly sunny, with a high near 80. South wind 5 to 15 mph, with gusts as high as 30 mph.
Thursday Night
 
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 60. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday
 
Rain showers likely before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 72. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday Night
 
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 47. Northwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Mostly sunny, with a high near 67.
Saturday Night
 
Partly cloudy, with a low around 44.
Sunday
 
Partly sunny, with a high near 66.
Sunday Night
 
A chance of rain showers after 7pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Monday
 
A chance of rain showers before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Monday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.