National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Tue, May-12-2026 3:32am CDT
Cottage Grove
 
  Tuesday

Tuesday: Chance Rain Showers
Chance Rain Showers
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Rain Showers Likely then Slight Chance Showers And Thunderstorms
Rain Showers Likely then Slight Chance Showers And T-Storms
Saturday

Saturday: Sunny
Sunny
Sunday

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

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
  Hi 76 °F Hi 63 °F Hi 69 °F Hi 78 °F Hi 83 °F Hi 81 °F Hi 78 °F
 
Overnight

Overnight: Scattered Rain Showers
Scattered Rain Showers
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Rain Showers Likely
Rain Showers Likely
Friday
Night
Friday Night: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
 
Lo 40 °F Lo 46 °F Lo 39 °F Lo 47 °F Lo 53 °F Lo 54 °F Lo 57 °F  

 

Overnight
 
Scattered rain showers. Mostly cloudy, with a low around 40. South wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
A chance of rain showers before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Southwest wind 10 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night
 
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 46. Northwest wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Wednesday
 
Mostly sunny, with a high near 63. Northwest wind around 15 mph, with gusts as high as 30 mph.
Wednesday Night
 
Mostly clear, with a low around 39. North wind 0 to 10 mph.
Thursday
 
Sunny, with a high near 69. East wind 0 to 5 mph.
Thursday Night
 
Rain showers likely after 7pm. Mostly cloudy, with a low around 47. Southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Friday
 
Rain showers likely before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 53. Chance of precipitation is 20%.
Saturday
 
Sunny, with a high near 83.
Saturday Night
 
A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 40%.
Sunday
 
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Sunday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Monday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.