National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Jul-23-2026 1:34pm CDT
Cottage Grove
 
This
Afternoon
This Afternoon: Partly Sunny
Partly Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Partly Sunny
Partly Sunny
Sunday

Sunday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Monday

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

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms
 
Hi 78 °F Hi 79 °F Hi 86 °F Hi 91 °F Hi 93 °F Hi 87 °F Hi 86 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Lo 58 °F Lo 61 °F Lo 69 °F Lo 72 °F Lo 67 °F Lo 63 °F Lo 63 °F  

 

This Afternoon
 
Partly sunny, with a high near 78. Southwest wind around 5 mph.
Tonight
 
Mostly cloudy, with a low around 58. Southwest wind 0 to 5 mph.
Friday
 
Mostly sunny, with a high near 79. South wind 0 to 10 mph.
Friday Night
 
Partly cloudy, with a low around 61. South wind 5 to 10 mph.
Saturday
 
Partly sunny, with a high near 86. Southwest wind 5 to 10 mph.
Saturday Night
 
Partly cloudy, with a low around 69. Southwest wind around 5 mph.
Sunday
 
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
 
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 50%.
Monday Night
 
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 67. Chance of precipitation is 20%.
Tuesday
 
Mostly sunny, with a high near 87.
Tuesday Night
 
Mostly clear, with a low around 63.
Wednesday
 
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 86. Chance of precipitation is 20%.
Wednesday Night
 
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.