National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Thu, May-07-2026 8:36am CDT
Cottage Grove
 
Today

Today: Scattered Rain Showers then Slight Chance Showers And Thunderstorms
Scattered Rain Showers then Slight Chance Showers And T-Storms
Friday

Friday: Areas Of Frost then Mostly Sunny
Areas Of Frost then Mostly Sunny
Saturday

Saturday: Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Rain Showers Likely
Rain Showers Likely
Wednesday

Wednesday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
 
Hi 59 °F Hi 65 °F Hi 68 °F Hi 60 °F Hi 62 °F Hi 64 °F Hi 68 °F  
 
Tonight

Tonight: Scattered Rain Showers then Areas Of Frost
Scattered Rain Showers then Areas Of Frost
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Partly Cloudy then Chance Rain Showers
Partly Cloudy then Chance Rain Showers
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
 
Lo 36 °F Lo 45 °F Lo 40 °F Lo 37 °F Lo 41 °F Lo 44 °F Lo 47 °F  

 

Today
 
Scattered rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 59. West wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
 
Scattered rain showers before 7pm, then areas of frost. Mostly clear, with a low around 36. Northwest wind 0 to 10 mph.
Friday
 
Areas of frost before 7am. Mostly sunny, with a high near 65. Southwest wind 0 to 10 mph.
Friday Night
 
Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph.
Saturday
 
A slight chance of rain showers after 7am. Mostly sunny, with a high near 68. West wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Saturday Night
 
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 40. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Sunday
 
Mostly sunny, with a high near 60. Northwest wind 5 to 15 mph.
Sunday Night
 
Mostly clear, with a low around 37. North wind 0 to 10 mph.
Monday
 
Sunny, with a high near 62.
Monday Night
 
A chance of rain showers after 1am. Partly cloudy, with a low around 41. Chance of precipitation is 30%.
Tuesday
 
Rain showers likely. Partly sunny, with a high near 64. Chance of precipitation is 60%.
Tuesday Night
 
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Wednesday
 
A slight chance of rain showers before 7am. Mostly sunny, with a high near 68. Chance of precipitation is 20%.
Wednesday Night
 
Partly cloudy, with a low around 47.

 

Forecast from NOAA-NWS for Cottage Grove, WI.