National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Jul-28-2026 10:56pm CDT
Cottage Grove
 
  Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Rain Showers
Rain Showers
Saturday

Saturday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
  Hi 85 °F Hi 87 °F Hi 76 °F Hi 80 °F Hi 81 °F Hi 84 °F Hi 87 °F
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Patchy Smoke then Mostly Clear
Patchy Smoke then Mostly Clear
Thursday
Night
Thursday Night: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Showers And Thunderstorms
Showers And T-Storms
Saturday
Night
Saturday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
 
Lo 59 °F Lo 62 °F Lo 64 °F Lo 64 °F Lo 61 °F Lo 59 °F Lo 62 °F  

 

Tonight
 
Mostly clear, with a low around 59. Southeast wind 0 to 5 mph.
Wednesday
 
Sunny, with a high near 85. Northeast wind 0 to 5 mph.
Wednesday Night
 
Patchy smoke between 7pm and 9pm. Mostly clear, with a low around 62. South wind 0 to 5 mph.
Thursday
 
Mostly sunny, with a high near 87. Southwest wind 0 to 5 mph.
Thursday Night
 
Mostly cloudy, with a low around 64. Southwest wind around 5 mph.
Friday
 
Rain showers between 7am and 4pm, then showers and thunderstorms. Cloudy, with a high near 76. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
Showers and thunderstorms. Cloudy, with a low around 64. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Sunday
 
Mostly sunny, with a high near 81.
Sunday Night
 
Mostly clear, with a low around 59.
Monday
 
Sunny, with a high near 84.
Monday Night
 
Mostly clear, with a low around 62.
Tuesday
 
Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Cottage Grove, WI.