National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Wed, May-06-2026 6:56pm CDT
Cottage Grove
 
  Thursday

Thursday: Scattered Rain Showers
Scattered Rain Showers
Friday

Friday: Areas Of Frost then Slight Chance Rain Showers
Areas Of Frost then Slight Chance Rain Showers
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Chance Rain Showers then Partly Sunny
Chance Rain Showers then Partly Sunny
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Rain Showers Likely
Rain Showers Likely
Wednesday

Wednesday: Chance Rain Showers then Mostly Sunny
Chance Rain Showers then Mostly Sunny
  Hi 58 °F Hi 64 °F Hi 71 °F Hi 63 °F Hi 63 °F Hi 66 °F Hi 70 °F
 
Tonight

Tonight: Mostly Clear then Widespread Frost
Mostly Clear then Widespread Frost
Thursday
Night
Thursday Night: Partly Cloudy then Areas Of Frost
Partly Cloudy then Areas Of Frost
Friday
Night
Friday Night: Slight Chance Rain Showers then Mostly Clear
Slight Chance Rain Showers then Mostly Clear
Saturday
Night
Saturday Night: Chance Rain Showers
Chance Rain Showers
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Chance Rain Showers
Chance Rain Showers
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 33 °F Lo 35 °F Lo 44 °F Lo 45 °F Lo 39 °F Lo 43 °F Lo 45 °F  

Frost Advisory issued May 6 at 6:51PM CDT until May 7 at 8:00AM CDT
Frost Advisory issued May 6 at 1:20PM CDT until May 7 at 8:00AM CDT
 

Tonight
 
Widespread frost after 1am. Mostly clear, with a low around 33. West wind 0 to 10 mph.
Thursday
 
Areas of frost before 8am, then scattered rain showers between 10am and 1pm, then scattered showers and thunderstorms. Partly sunny, with a high near 58. West wind 5 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night
 
Areas of frost after 5am. Partly cloudy, with a low around 35. West wind 0 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
Friday
 
Areas of frost before 7am, then a slight chance of rain showers. Mostly sunny, with a high near 64. Southwest wind 0 to 10 mph. Chance of precipitation is 20%.
Friday Night
 
A slight chance of rain showers before 7pm. Mostly clear, with a low around 44. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
 
Mostly sunny, with a high near 71. West wind 10 to 15 mph.
Saturday Night
 
A chance of rain showers after 7pm. Mostly cloudy, with a low around 45. Northwest wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Sunday
 
A chance of rain showers before 7am. Partly sunny, with a high near 63. North wind 5 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Sunday Night
 
Partly cloudy, with a low around 39.
Monday
 
Sunny, with a high near 63.
Monday Night
 
A chance of rain showers after 7pm. Partly cloudy, with a low around 43. Chance of precipitation is 40%.
Tuesday
 
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Tuesday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Wednesday
 
A chance of rain showers before 7am. Mostly sunny, with a high near 70. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.