Cottage Grove, WI Weather

74°F

Cottage Grove, WI

Updated: Aug-18-2026 9:53am

Navigation

External Links

Alerts

Style Options

National Weather Service Forecast for: Cottage Grove, WI
Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI

Updated: Tue, Aug-18-2026 9:01am CDT

Cottage Grove

Today Slight Chance Rain Showers then Chance Showers And T-Storms	Wednesday Mostly Sunny	Thursday Sunny	Friday Chance Showers And T-Storms	Saturday Mostly Sunny	Sunday Sunny	Monday Mostly Sunny
Hi 80 °F	Hi 78 °F	Hi 80 °F	Hi 80 °F	Hi 78 °F	Hi 76 °F	Hi 77 °F

Tonight Chance Showers And T-Storms then Mostly Cloudy	Wednesday Night Mostly Clear	Thursday Night Partly Cloudy then Chance Showers And T-Storms	Friday Night Chance Showers And T-Storms	Saturday Night Mostly Clear	Sunday Night Partly Cloudy	Monday Night Partly Cloudy
Lo 60 °F	Lo 56 °F	Lo 60 °F	Lo 61 °F	Lo 57 °F	Lo 57 °F	Lo 60 °F

Today	A slight chance of rain showers before 10am, then a chance of showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 75 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Tonight	A chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 60. Northwest wind 0 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday	Mostly sunny, with a high near 78. North wind 0 to 5 mph.
Wednesday Night	Mostly clear, with a low around 56. North wind 0 to 5 mph.
Thursday	Sunny, with a high near 80. West wind 0 to 5 mph.
Thursday Night	A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60. Southwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Friday	A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday Night	A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday	Mostly sunny, with a high near 78.
Saturday Night	Mostly clear, with a low around 57.
Sunday	Sunny, with a high near 76.
Sunday Night	Partly cloudy, with a low around 57.
Monday	Mostly sunny, with a high near 77.
Monday Night	Partly cloudy, with a low around 60.

Forecast from NOAA-NWS for Cottage Grove, WI.