National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Sep-17-2026 6:16am CDT
Cottage Grove
 
Today

Today: Chance Rain Showers then Cloudy
Chance Rain Showers then Cloudy
Friday

Friday: Mostly Cloudy then Chance Rain Showers
Mostly Cloudy then Chance Rain Showers
Saturday

Saturday: Showers And Thunderstorms
Showers And T-Storms
Sunday

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

Monday: Chance Rain Showers
Chance Rain Showers
Tuesday

Tuesday: Slight Chance Rain Showers
Slight Chance Rain Showers
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
 
Hi 71 °F Hi 72 °F Hi 75 °F Hi 67 °F Hi 63 °F Hi 65 °F Hi 71 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Showers And Thunderstorms
Showers And T-Storms
Saturday
Night
Saturday Night: Showers And Thunderstorms
Showers And T-Storms
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Chance Rain Showers
Chance Rain Showers
Tuesday
Night
Tuesday Night: Mostly Cloudy
Mostly Cloudy
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
 
Lo 54 °F Lo 60 °F Lo 56 °F Lo 52 °F Lo 50 °F Lo 50 °F Lo 52 °F  

 

Today
 
A chance of rain showers before 11am. Cloudy, with a high near 71. Northeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
Mostly cloudy, with a low around 54. Northeast wind 0 to 5 mph.
Friday
 
A chance of rain showers after 1pm. Mostly cloudy. High near 72, with temperatures falling to around 67 in the afternoon. East wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
Rain showers likely before 7pm, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 60. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 75. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 inches possible.
Saturday Night
 
Showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Northeast wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Sunday
 
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 67. Northeast wind around 15 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
 
A chance of rain showers after 7pm. Mostly cloudy, with a low around 52. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Monday
 
A chance of rain showers. Mostly cloudy, with a high near 63. Chance of precipitation is 40%.
Monday Night
 
A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Tuesday
 
A slight chance of rain showers before 1pm. Partly sunny, with a high near 65. Chance of precipitation is 20%.
Tuesday Night
 
Mostly cloudy, with a low around 50.
Wednesday
 
Mostly sunny, with a high near 71.
Wednesday Night
 
Partly cloudy, with a low around 52.

 

Forecast from NOAA-NWS for Cottage Grove, WI.