National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Aug-11-2026 11:36am CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday

Wednesday: Areas Of Fog then Chance Rain Showers
Areas Of Fog then Chance Rain Showers
Thursday

Thursday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

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

Sunday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Monday

Monday: Mostly Sunny
Mostly Sunny
 
Hi 81 °F Hi 83 °F Hi 80 °F Hi 77 °F Hi 77 °F Hi 78 °F Hi 78 °F  
 
Tonight

Tonight: Mostly Cloudy then Areas Of Fog
Mostly Cloudy then Areas Of Fog
Wednesday
Night
Wednesday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Thursday
Night
Thursday Night: Slight Chance Showers And Thunderstorms then Mostly Cloudy
Slight Chance Showers And T-Storms then Mostly Cloudy
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
Sunday
Night
Sunday Night: Mostly Cloudy
Mostly Cloudy
Monday
Night
Monday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 65 °F Lo 65 °F Lo 61 °F Lo 59 °F Lo 64 °F Lo 61 °F Lo 59 °F  

Severe Thunderstorm Watch issued August 11 at 10:50AM CDT until August 11 at 2:00PM CDT
Severe Thunderstorm Watch issued August 11 at 7:22AM CDT until August 11 at 2:00PM CDT
 

This Afternoon
 
A chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 81. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
 
Areas of fog after 1am. Mostly cloudy, with a low around 65. Southeast wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Wednesday
 
Areas of fog before 9am, then a chance of rain showers. Partly sunny, with a high near 83. South wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night
 
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 65. Northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
A chance of rain showers between 7am and 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night
 
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 61. Northeast wind around 5 mph. Chance of precipitation is 20%.
Friday
 
Mostly sunny, with a high near 77. East wind 5 to 10 mph.
Friday Night
 
A slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 59. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Saturday Night
 
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Sunday
 
Rain showers likely before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Sunday Night
 
Mostly cloudy, with a low around 61.
Monday
 
Mostly sunny, with a high near 78.
Monday Night
 
A slight chance of rain showers between 7pm and 1am. Partly cloudy, with a low around 59. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.