National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sat, Sep-12-2026 3:41pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny then Slight Chance Rain Showers
Partly Sunny then Slight Chance Rain Showers
Monday

Monday: Mostly Sunny then Chance Rain Showers
Mostly Sunny then Chance Rain Showers
Tuesday

Tuesday: Showers And Thunderstorms
Showers And T-Storms
Wednesday

Wednesday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Thursday

Thursday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Friday

Friday: Chance Rain Showers
Chance Rain Showers
 
Hi 79 °F Hi 70 °F Hi 73 °F Hi 79 °F Hi 68 °F Hi 73 °F Hi 74 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Showers And Thunderstorms
Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And T-Storms then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 53 °F Lo 43 °F Lo 61 °F Lo 55 °F Lo 58 °F Lo 54 °F Lo 54 °F  

 

This Afternoon
 
Mostly sunny, with a high near 79. Northwest wind 5 to 10 mph.
Tonight
 
Mostly clear, with a low around 53. Northwest wind around 5 mph.
Sunday
 
A slight chance of rain showers between noon and 4pm. Partly sunny, with a high near 70. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
 
Mostly clear, with a low around 43. Northwest wind 0 to 5 mph.
Monday
 
A chance of rain showers after 1pm. Mostly sunny. High near 73, with temperatures falling to around 68 in the afternoon. Southeast wind 0 to 10 mph. Chance of precipitation is 30%.
Monday Night
 
A chance of rain showers before 10pm, then showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
Showers and thunderstorms. Mostly cloudy, with a high near 79. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Tuesday Night
 
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday
 
Showers and thunderstorms likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Wednesday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Thursday
 
Showers and thunderstorms likely before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Thursday Night
 
A chance of rain showers after 7pm. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Friday
 
A chance of rain showers. Partly sunny, with a high near 74. Chance of precipitation is 40%.
Friday Night
 
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.