National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Jun-18-2026 7:33am CDT
Cottage Grove
 
Today

Today: Mostly Sunny
Mostly Sunny
Juneteenth

Juneteenth: Sunny
Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Chance Rain Showers
Chance Rain Showers
Monday

Monday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Chance Rain Showers
Chance Rain Showers
 
Hi 71 °F Hi 75 °F Hi 77 °F Hi 73 °F Hi 73 °F Hi 75 °F Hi 76 °F  
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And T-Storms then Slight Chance Showers And T-Storms
 
Lo 53 °F Lo 55 °F Lo 55 °F Lo 51 °F Lo 51 °F Lo 55 °F Lo 56 °F  

 

Today
 
Mostly sunny, with a high near 71. Northwest wind around 10 mph.
Tonight
 
A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 53. West wind 5 to 10 mph. Chance of precipitation is 20%.
Juneteenth
 
Sunny, with a high near 75. Northwest wind 5 to 10 mph.
Friday Night
 
A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 55. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Sunny, with a high near 77. West wind 5 to 10 mph.
Saturday Night
 
Partly cloudy, with a low around 55. North wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Sunday
 
A chance of rain showers after 7am. Mostly cloudy, with a high near 73. East wind 0 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
 
A chance of rain showers. Mostly cloudy, with a low around 51. Northeast wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
A slight chance of rain showers before 7am. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
Monday Night
 
Partly cloudy, with a low around 51.
Tuesday
 
Sunny, with a high near 75.
Tuesday Night
 
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Wednesday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
Wednesday Night
 
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.