National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sun, Jul-12-2026 12:01am CDT
Cottage Grove
 
  Sunday

Sunday: Sunny
Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Saturday

Saturday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
  Hi 88 °F Hi 93 °F Hi 95 °F Hi 92 °F Hi 90 °F Hi 89 °F Hi 88 °F
 
Overnight

Overnight: Clear
Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Clear
Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Lo 62 °F Lo 68 °F Lo 70 °F Lo 71 °F Lo 68 °F Lo 68 °F Lo 68 °F  

 

Overnight
 
Clear, with a low around 62. Northeast wind around 0 mph.
Sunday
 
Sunny, with a high near 88. Northwest wind 0 to 5 mph.
Sunday Night
 
Mostly clear, with a low around 68. West wind 0 to 5 mph.
Monday
 
Sunny, with a high near 93. Heat index values as high as 98. West wind around 5 mph.
Monday Night
 
Clear, with a low around 70. West wind around 5 mph.
Tuesday
 
Sunny, with a high near 95. West wind around 5 mph.
Tuesday Night
 
Mostly clear, with a low around 71. West wind around 5 mph.
Wednesday
 
Sunny, with a high near 92. Northwest wind around 5 mph.
Wednesday Night
 
Mostly clear, with a low around 68.
Thursday
 
Sunny, with a high near 90.
Thursday Night
 
Partly cloudy, with a low around 68.
Friday
 
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Friday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Saturday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.