National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, Jul-22-2026 12:31am CDT
Cottage Grove
 
  Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Slight Chance Showers And Thunderstorms
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: Sunny
Sunny
  Hi 74 °F Hi 79 °F Hi 81 °F Hi 86 °F Hi 91 °F Hi 88 °F Hi 85 °F
 
Overnight

Overnight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
 
Lo 52 °F Lo 54 °F Lo 57 °F Lo 60 °F Lo 69 °F Lo 67 °F Lo 64 °F  

 

Overnight
 
Mostly clear, with a low around 52. North wind around 5 mph.
Wednesday
 
Sunny, with a high near 74. North wind around 5 mph.
Wednesday Night
 
Mostly clear, with a low around 54. Northwest wind 0 to 5 mph.
Thursday
 
Mostly sunny, with a high near 79. West wind 0 to 5 mph.
Thursday Night
 
Partly cloudy, with a low around 57. Southwest wind 0 to 5 mph.
Friday
 
Sunny, with a high near 81. Southwest wind 0 to 10 mph.
Friday Night
 
Mostly clear, with a low around 60. South wind 5 to 10 mph.
Saturday
 
Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph.
Saturday Night
 
Partly cloudy, with a low around 69.
Sunday
 
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Sunday Night
 
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 50%.
Monday
 
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Monday Night
 
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 64. Chance of precipitation is 20%.
Tuesday
 
Sunny, with a high near 85.

 

Forecast from NOAA-NWS for Cottage Grove, WI.