National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Mon, Sep-14-2026 6:27am CDT
Cottage Grove
 
Today

Today: Partly Sunny then Slight Chance Rain Showers
Partly Sunny then Slight Chance Rain Showers
Tuesday

Tuesday: Showers And Thunderstorms
Showers And T-Storms
Wednesday

Wednesday: Chance Rain Showers
Chance Rain Showers
Thursday

Thursday: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Chance Rain Showers
Chance Rain Showers
Saturday

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

Sunday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Hi 70 °F Hi 75 °F Hi 68 °F Hi 74 °F Hi 75 °F Hi 73 °F Hi 72 °F  
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
Slight Chance Showers And T-Storms then Showers And T-Storms
Tuesday
Night
Tuesday Night: Mostly Cloudy
Mostly Cloudy
Wednesday
Night
Wednesday Night: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Friday
Night
Friday Night: Rain Showers Likely
Rain Showers Likely
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
 
Lo 63 °F Lo 53 °F Lo 60 °F Lo 57 °F Lo 60 °F Lo 56 °F Lo 55 °F  

 

Today
 
A slight chance of rain showers after 4pm. Partly sunny, with a high near 70. Southeast wind 0 to 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
A chance of rain showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 11pm, then showers and thunderstorms. Mostly cloudy, with a low around 63. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
Showers and thunderstorms before 1pm. Mostly cloudy, with a high near 75. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
 
Mostly cloudy, with a low around 53. North wind 0 to 5 mph.
Wednesday
 
A chance of rain showers after 7am. Mostly cloudy, with a high near 68. East wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday Night
 
A chance of rain showers before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
 
Showers and thunderstorms before 1pm. Mostly cloudy, with a high near 74. Northeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
A chance of rain showers after 1am. Mostly cloudy, with a low around 57. East wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Friday
 
A chance of rain showers. Partly sunny, with a high near 75. Chance of precipitation is 50%.
Friday Night
 
Rain showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Saturday
 
Rain showers likely before 7am, then showers and thunderstorms likely between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
Saturday Night
 
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Sunday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Sunday Night
 
A slight chance of rain showers. Mostly cloudy, with a low around 55. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.