National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI
Updated: Sun, May-17-2026 10:46pm CDT
Cottage Grove
 
  Monday

Monday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday

Tuesday: Showers And Thunderstorms
Showers And T-Storms
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday

Saturday: Slight Chance Rain Showers then Partly Sunny
Slight Chance Rain Showers then Partly Sunny
Sunday

Sunday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
  Hi 81 °F Hi 74 °F Hi 61 °F Hi 64 °F Hi 69 °F Hi 74 °F Hi 80 °F
 
Tonight

Tonight: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Mostly Cloudy then Slight Chance Rain Showers
Mostly Cloudy then Slight Chance Rain Showers
Friday
Night
Friday Night: Slight Chance Rain Showers
Slight Chance Rain Showers
Saturday
Night
Saturday Night: Mostly Cloudy
Mostly Cloudy
 
Lo 64 °F Lo 63 °F Lo 44 °F Lo 39 °F Lo 43 °F Lo 48 °F Lo 52 °F  

 

Tonight
 
A chance of showers and thunderstorms between 2am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Monday
 
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night
 
A chance of showers and thunderstorms before 4am, then showers and thunderstorms. Mostly cloudy, with a low around 63. South wind 10 to 15 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
 
Showers and thunderstorms before 1pm. Partly sunny. High near 74, with temperatures falling to around 67 in the afternoon. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night
 
Partly cloudy, with a low around 44. Northwest wind 10 to 15 mph.
Wednesday
 
Mostly sunny, with a high near 61. North wind 5 to 10 mph.
Wednesday Night
 
Partly cloudy, with a low around 39. East wind 0 to 5 mph.
Thursday
 
Mostly sunny, with a high near 64. East wind 5 to 10 mph.
Thursday Night
 
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 20%.
Friday
 
A slight chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 20%.
Friday Night
 
A slight chance of rain showers. Mostly cloudy, with a low around 48. Chance of precipitation is 20%.
Saturday
 
A slight chance of rain showers before 7am. Partly sunny, with a high near 74. Chance of precipitation is 20%.
Saturday Night
 
Mostly cloudy, with a low around 52.
Sunday
 
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Cottage Grove, WI.