National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, Mar-27-2026 5:16am CDT
Cottage Grove
 
Today

Today: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Chance T-storms then Chance Light Rain
Chance T-storms then Chance Light Rain
Wednesday

Wednesday: Chance Light Rain
Chance Light Rain
Thursday

Thursday: Chance Light Rain then Chance Rain And Snow
Chance Light Rain then Chance Rain And Snow
 
Hi 43 °F Hi 49 °F Hi 63 °F Hi 68 °F Hi 76 °F Hi 57 °F Hi 45 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Mostly Cloudy
Mostly Cloudy
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Chance Light Rain then Chance T-storms
Chance Light Rain then Chance T-storms
Tuesday
Night
Tuesday Night: Rain Likely
Rain Likely
Wednesday
Night
Wednesday Night: Chance Rain
Chance Rain
Thursday
Night
Thursday Night: Chance Rain
Chance Rain
 
Lo 23 °F Lo 37 °F Lo 43 °F Lo 49 °F Lo 46 °F Lo 36 °F Lo 32 °F  

 

Today
 
Mostly sunny, with a high near 43. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Tonight
 
Mostly clear, with a low around 23. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Saturday
 
Mostly sunny, with a high near 49. Southwest wind 5 to 15 mph.
Saturday Night
 
Mostly cloudy, with a low around 37. Southwest wind 10 to 15 mph.
Sunday
 
Partly sunny, with a high near 63. Southwest wind around 10 mph.
Sunday Night
 
Partly cloudy, with a low around 43. South wind 5 to 10 mph.
Monday
 
Mostly sunny, with a high near 68. Southeast wind 5 to 10 mph.
Monday Night
 
A chance of rain between 7pm and 1am, then a chance of thunderstorms and a chance of rain. Mostly cloudy, with a low around 49. Southeast wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday
 
A chance of thunderstorms and a chance of rain before 7am, then a chance of rain and a slight chance of thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Tuesday Night
 
Rain likely and a chance of thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Wednesday
 
A chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
Wednesday Night
 
A chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Thursday
 
A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 45. Chance of precipitation is 50%.
Thursday Night
 
A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.