National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Jul-23-2026 11:52pm CDT
Cottage Grove
 
  Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Partly Sunny
Partly Sunny
Sunday

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

Monday: Chance Showers And Thunderstorms
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
Thursday

Thursday: Mostly Sunny
Mostly Sunny
  Hi 79 °F Hi 85 °F Hi 92 °F Hi 92 °F Hi 87 °F Hi 86 °F Hi 86 °F
 
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy then Slight Chance Showers And Thunderstorms
Partly Cloudy then Slight Chance Showers And T-Storms
Sunday
Night
Sunday Night: Partly Cloudy then Chance Showers And Thunderstorms
Partly Cloudy then 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 56 °F Lo 60 °F Lo 67 °F Lo 73 °F Lo 67 °F Lo 63 °F Lo 63 °F  

 

Overnight
 
Mostly cloudy, with a low around 56. Southwest wind around 0 mph.
Friday
 
Mostly sunny, with a high near 79. South wind 0 to 5 mph.
Friday Night
 
Partly cloudy, with a low around 60. South wind around 5 mph.
Saturday
 
Partly sunny, with a high near 85. Southwest wind 5 to 10 mph.
Saturday Night
 
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Southwest wind around 5 mph. Chance of precipitation is 20%.
Sunday
 
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 92. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Monday
 
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
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%.
Thursday
 
Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Cottage Grove, WI.