National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, Apr-02-2026 3:33am CDT
Cottage Grove
 
  Thursday

Thursday: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Partly Sunny
Partly Sunny
Saturday

Saturday: Chance Rain Showers
Chance Rain Showers
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Partly Sunny
Partly Sunny
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Slight Chance Rain Showers
Slight Chance Rain Showers
  Hi 63 °F Hi 56 °F Hi 54 °F Hi 51 °F Hi 50 °F Hi 46 °F Hi 60 °F
 
Overnight

Overnight: Freezing Rain
Freezing Rain
Thursday
Night
Thursday Night: Showers And Thunderstorms then Mostly Cloudy
Showers And T-Storms then Mostly Cloudy
Friday
Night
Friday Night: Showers And Thunderstorms
Showers And T-Storms
Saturday
Night
Saturday Night: Mostly Cloudy
Mostly Cloudy
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Mostly Cloudy
Mostly Cloudy
Tuesday
Night
Tuesday Night: Mostly Cloudy then Slight Chance Snow Showers
Mostly Cloudy then Slight Chance Snow Showers
 
Lo 32 °F Lo 37 °F Lo 39 °F Lo 32 °F Lo 33 °F Lo 26 °F Lo 30 °F  

 

Overnight
 
Freezing rain and rain. Cloudy, with a low around 32. East wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.
Thursday
 
Rain before 10am, then showers and thunderstorms between 10am and 4pm, then a chance of showers and thunderstorms. Cloudy, with a high near 63. Southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.
Thursday Night
 
Showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 37. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Friday
 
Partly sunny, with a high near 56. North wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
A slight chance of rain showers before 7pm, then showers and thunderstorms. Cloudy, with a low around 39. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
 
A chance of rain showers before 1pm. Mostly cloudy. High near 54, with temperatures falling to around 48 in the afternoon. Southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
Mostly cloudy, with a low around 32. West wind around 15 mph, with gusts as high as 30 mph.
Sunday
 
Mostly sunny, with a high near 51. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
 
Mostly clear, with a low around 33.
Monday
 
Partly sunny, with a high near 50.
Monday Night
 
Mostly cloudy, with a low around 26.
Tuesday
 
Mostly sunny, with a high near 46.
Tuesday Night
 
A slight chance of snow showers between 1am and 4am, then a slight chance of rain showers. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Wednesday
 
A slight chance of rain showers. Partly sunny, with a high near 60. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.