National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sun, Sep-27-2026 6:01pm CDT
Cottage Grove
 
  Monday

Monday: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Partly Sunny
Partly Sunny
Wednesday

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

Thursday: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Saturday

Saturday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
  Hi 74 °F Hi 74 °F Hi 71 °F Hi 69 °F Hi 64 °F Hi 64 °F Hi 63 °F
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Rain Showers Likely
Rain Showers Likely
Wednesday
Night
Wednesday Night: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday
Night
Friday Night: Mostly Clear then Slight Chance Rain Showers
Mostly Clear then Slight Chance Rain Showers
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
 
Lo 51 °F Lo 51 °F Lo 61 °F Lo 62 °F Lo 49 °F Lo 44 °F Lo 47 °F  

 

Tonight
 
Mostly cloudy, with a low around 51. North wind 0 to 5 mph.
Monday
 
Mostly sunny, with a high near 74. Northeast wind around 0 mph.
Monday Night
 
Mostly clear, with a low around 51. Southeast wind around 0 mph.
Tuesday
 
Partly sunny, with a high near 74. South wind 0 to 10 mph.
Tuesday Night
 
Rain showers likely after 7pm. Mostly cloudy, with a low around 61. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday
 
Rain showers likely before 7am, then showers and thunderstorms likely. Cloudy, with a high near 71. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
 
Showers and thunderstorms. Cloudy, with a low around 62. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
 
Showers and thunderstorms. Cloudy, with a high near 69. West wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
A chance of rain showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Friday
 
A slight chance of rain showers before 7am. Mostly sunny, with a high near 64. Chance of precipitation is 20%.
Friday Night
 
A slight chance of rain showers after 1am. Mostly clear, with a low around 44. Chance of precipitation is 20%.
Saturday
 
A slight chance of rain showers before 7am. Mostly sunny, with a high near 64. Chance of precipitation is 20%.
Saturday Night
 
Partly cloudy, with a low around 47.
Sunday
 
Partly sunny, with a high near 63.

 

Forecast from NOAA-NWS for Cottage Grove, WI.