National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, Aug-04-2026 11:06pm CDT
Cottage Grove
 
  Wednesday

Wednesday: Patchy Fog
Patchy Fog
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

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

Monday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Tuesday

Tuesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
  Hi 74 °F Hi 80 °F Hi 82 °F Hi 81 °F Hi 83 °F Hi 81 °F Hi 79 °F
 
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 63 °F Lo 57 °F Lo 59 °F Lo 64 °F Lo 63 °F Lo 64 °F Lo 63 °F  

 

Tonight
 
A chance of showers and thunderstorms before 4am, then patchy fog and showers and thunderstorms likely. Mostly cloudy, with a low around 63. Northwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
 
Patchy fog and a chance of showers and thunderstorms before 7am, then patchy fog and showers and thunderstorms likely between 7am and 9am, then a chance of showers and thunderstorms between 9am and 5pm. Mostly cloudy, with a high near 74. North wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
 
Mostly cloudy, with a low around 57. Northwest wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Thursday
 
Mostly sunny, with a high near 80. Northeast wind around 0 mph.
Thursday Night
 
Mostly clear, with a low around 59. South wind around 0 mph.
Friday
 
Mostly sunny, with a high near 82. South wind 0 to 10 mph.
Friday Night
 
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Partly cloudy, with a low around 64. Southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
Sunny, with a high near 81. West wind around 5 mph.
Saturday Night
 
A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 50%.
Sunday
 
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Sunday Night
 
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
Monday
 
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Monday Night
 
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Tuesday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.