Cottage Grove, WI Weather

68°F

Cottage Grove, WI

Updated: Aug-26-2026 7:18am

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

Updated: Wed, Aug-26-2026 6:31am CDT

Cottage Grove

Today Mostly Sunny	Thursday Mostly Sunny	Friday Sunny	Saturday Partly Sunny	Sunday Chance Showers And T-Storms	Monday Chance Showers And T-Storms	Tuesday Chance Showers And T-Storms
Hi 82 °F	Hi 80 °F	Hi 80 °F	Hi 80 °F	Hi 85 °F	Hi 85 °F	Hi 84 °F

Tonight Mostly Clear	Thursday Night Mostly Clear	Friday Night Partly Cloudy	Saturday Night Chance Showers And T-Storms	Sunday Night Slight Chance Showers And T-Storms	Monday Night Partly Cloudy then Chance Showers And T-Storms	Tuesday Night Chance Rain Showers
Lo 61 °F	Lo 56 °F	Lo 60 °F	Lo 65 °F	Lo 69 °F	Lo 66 °F	Lo 65 °F

Today	Mostly sunny, with a high near 82. West wind 5 to 15 mph.
Tonight	Mostly clear, with a low around 61. Northwest wind 5 to 10 mph.
Thursday	Mostly sunny, with a high near 80. Northwest wind around 5 mph.
Thursday Night	Mostly clear, with a low around 56. North wind 0 to 5 mph.
Friday	Sunny, with a high near 80. South wind 0 to 5 mph.
Friday Night	Partly cloudy, with a low around 60. South wind around 5 mph.
Saturday	Partly sunny, with a high near 80. South wind 5 to 10 mph.
Saturday Night	A slight chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Sunday	A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Sunday Night	A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Monday	A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night	A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Tuesday	A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Tuesday Night	A chance of rain showers after 7pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.