National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Mar-26-2026 2:31pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Rain Showers
Rain Showers
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Chance Rain
Chance Rain
Wednesday

Wednesday: Chance Light Rain
Chance Light Rain
 
Hi 56 °F Hi 43 °F Hi 49 °F Hi 64 °F Hi 70 °F Hi 70 °F Hi 59 °F  
 
Tonight

Tonight: Rain Showers Likely then Mostly Cloudy
Rain Showers Likely then Mostly Cloudy
Friday
Night
Friday Night: 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 T-storms
Chance T-storms
Tuesday
Night
Tuesday Night: Rain Likely
Rain Likely
Wednesday
Night
Wednesday Night: Chance Rain
Chance Rain
 
Lo 23 °F Lo 22 °F Lo 36 °F Lo 45 °F Lo 48 °F Lo 45 °F Lo 38 °F  

 

This Afternoon
 
Rain showers. Cloudy. High near 56, with temperatures falling to around 51 in the afternoon. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
Rain showers likely before 9pm. Mostly cloudy, with a low around 23. North wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Friday
 
Mostly sunny, with a high near 43. North wind 10 to 15 mph.
Friday Night
 
Mostly clear, with a low around 22. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
 
Mostly sunny, with a high near 49. Southwest wind 5 to 15 mph.
Saturday Night
 
Mostly cloudy, with a low around 36. South wind around 10 mph.
Sunday
 
Mostly sunny, with a high near 64. Southwest wind around 10 mph.
Sunday Night
 
Partly cloudy, with a low around 45. South wind 5 to 10 mph.
Monday
 
Mostly sunny, with a high near 70.
Monday Night
 
A chance of thunderstorms and a chance of rain after 7pm. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Tuesday
 
A chance of rain. Partly sunny, with a high near 70. Chance of precipitation is 50%.
Tuesday Night
 
A chance of rain before 7pm, then rain likely and a slight chance of thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Wednesday
 
A chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Wednesday Night
 
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.