National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Fri, May-08-2026 10:33pm CDT
Cottage Grove
 
  Saturday

Saturday: Chance Rain Showers
Chance Rain Showers
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Areas Of Frost then Sunny
Areas Of Frost then Sunny
Tuesday

Tuesday: Rain Showers
Rain Showers
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Friday

Friday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
  Hi 66 °F Hi 60 °F Hi 60 °F Hi 64 °F Hi 64 °F Hi 70 °F Hi 78 °F
 
Tonight

Tonight: Slight Chance Rain Showers then Mostly Cloudy
Slight Chance Rain Showers then Mostly Cloudy
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost
Monday
Night
Monday Night: Partly Cloudy then Chance Rain Showers
Partly Cloudy then Chance Rain Showers
Tuesday
Night
Tuesday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
 
Lo 47 °F Lo 39 °F Lo 36 °F Lo 40 °F Lo 43 °F Lo 43 °F Lo 50 °F  

 

Tonight
 
A slight chance of rain showers before midnight. Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
 
A chance of rain showers between 11am and 4pm. Partly sunny, with a high near 66. West wind 10 to 15 mph. Chance of precipitation is 30%.
Saturday Night
 
Mostly clear, with a low around 39. Northwest wind 0 to 15 mph.
Sunday
 
Mostly sunny, with a high near 60. Northwest wind 0 to 15 mph.
Sunday Night
 
Areas of frost after 3am. Mostly clear, with a low around 36. North wind 0 to 10 mph.
Monday
 
Areas of frost before 7am. Sunny, with a high near 60. North wind 0 to 5 mph.
Monday Night
 
A chance of rain showers after 1am. Partly cloudy, with a low around 40. Southeast wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
Rain showers before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 64. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Wednesday
 
Mostly sunny, with a high near 64.
Wednesday Night
 
Partly cloudy, with a low around 43.
Thursday
 
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
Thursday Night
 
A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Friday
 
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.