National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sun, Jul-26-2026 8:37am CDT
Cottage Grove
 
Today

Today: Mostly Sunny
Mostly Sunny
Monday

Monday: Chance Showers And Thunderstorms then Mostly Sunny
Chance Showers And T-Storms then Mostly Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

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

Friday: Chance Rain Showers
Chance Rain Showers
Saturday

Saturday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
 
Hi 92 °F Hi 92 °F Hi 84 °F Hi 85 °F Hi 86 °F Hi 85 °F Hi 85 °F  
 
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance 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
 
Lo 70 °F Lo 67 °F Lo 60 °F Lo 61 °F Lo 64 °F Lo 64 °F Lo 62 °F  

Heat Advisory issued July 26 at 5:10AM CDT until July 26 at 9:00PM CDT
 

Today
 
Mostly sunny, with a high near 92. Heat index values as high as 101. Southwest wind 5 to 10 mph.
Tonight
 
A chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 70. Heat index values as high as 101. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Monday
 
A chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 92. Heat index values as high as 101. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 67. Northwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
Sunny, with a high near 84. North wind 5 to 10 mph.
Tuesday Night
 
Mostly clear, with a low around 60. East wind 0 to 5 mph.
Wednesday
 
Sunny, with a high near 85. Northeast wind 0 to 5 mph.
Wednesday Night
 
Mostly clear, with a low around 61. East wind 0 to 5 mph.
Thursday
 
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
Thursday Night
 
A chance of rain showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday
 
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Saturday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 62. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.