National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, May-13-2026 7:33pm CDT
Cottage Grove
 
  Thursday

Thursday: Sunny
Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

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

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

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

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

Wednesday: Chance Rain Showers
Chance Rain Showers
  Hi 70 °F Hi 79 °F Hi 82 °F Hi 78 °F Hi 85 °F Hi 74 °F Hi 69 °F
 
Tonight

Tonight: 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 Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And T-Storms Likely then Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
Tuesday
Night
Tuesday Night: Chance Rain Showers
Chance Rain Showers
 
Lo 38 °F Lo 50 °F Lo 55 °F Lo 53 °F Lo 60 °F Lo 59 °F Lo 50 °F  

 

Tonight
 
Mostly clear, with a low around 38. North wind 0 to 5 mph.
Thursday
 
Sunny, with a high near 70. Southeast wind 0 to 5 mph.
Thursday Night
 
A chance of rain showers between 10pm and 4am. Mostly cloudy, with a low around 50. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday
 
Mostly sunny, with a high near 79. South wind 10 to 15 mph, with gusts as high as 30 mph. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. West wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night
 
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 53. East wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday
 
A chance of rain showers before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 78. East wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
 
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Monday
 
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
 
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Tuesday
 
Showers and thunderstorms likely. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Tuesday Night
 
A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Wednesday
 
A chance of rain showers before 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.