National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sat, Sep-26-2026 2:31pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Partly Sunny then Slight Chance Rain Showers
Partly Sunny then Slight Chance Rain Showers
Wednesday

Wednesday: Rain Showers Likely
Rain Showers Likely
Thursday

Thursday: Rain Showers Likely
Rain Showers Likely
Friday

Friday: Chance Rain Showers
Chance Rain Showers
 
Hi 70 °F Hi 69 °F Hi 72 °F Hi 72 °F Hi 70 °F Hi 70 °F Hi 66 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday
Night
Tuesday Night: Rain Showers Likely
Rain Showers Likely
Wednesday
Night
Wednesday Night: Rain Showers Likely
Rain Showers Likely
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday
Night
Friday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 45 °F Lo 52 °F Lo 50 °F Lo 59 °F Lo 58 °F Lo 53 °F Lo 50 °F  

 

This Afternoon
 
Mostly sunny, with a high near 70. Southeast wind around 5 mph.
Tonight
 
Mostly cloudy, with a low around 45. East wind 0 to 5 mph.
Sunday
 
Partly sunny, with a high near 69. East wind around 0 mph.
Sunday Night
 
Partly cloudy, with a low around 52. North wind around 0 mph.
Monday
 
Mostly sunny, with a high near 72. Northeast wind around 0 mph.
Monday Night
 
Partly cloudy, with a low around 50. Southeast wind around 0 mph.
Tuesday
 
A slight chance of rain showers after 1pm. Partly sunny, with a high near 72. South wind 0 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night
 
Rain showers likely. Mostly cloudy, with a low around 59. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
 
Rain showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Wednesday Night
 
Rain showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Thursday
 
Rain showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Thursday Night
 
A chance of rain showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.
Friday
 
A chance of rain showers. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Friday Night
 
A slight chance of rain showers. Partly cloudy, with a low around 50. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.