Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Aug-25-2026 6:49pm

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

Updated: Tue, Aug-25-2026 2:36pm CDT

Cottage Grove

	Wednesday Mostly Sunny	Thursday Sunny	Friday Sunny	Saturday Partly Sunny	Sunday Chance Showers And T-Storms	Monday Chance Showers And T-Storms then Slight Chance Showers And T-Storms	Tuesday Slight Chance Showers And T-Storms
	Hi 83 °F	Hi 81 °F	Hi 80 °F	Hi 81 °F	Hi 84 °F	Hi 84 °F	Hi 82 °F

Tonight Chance Showers And T-Storms	Wednesday Night Mostly Clear	Thursday Night Mostly Clear	Friday Night Partly Cloudy	Saturday Night Mostly Cloudy then Chance Showers And T-Storms	Sunday Night Slight Chance Showers And T-Storms	Monday Night Mostly Cloudy then Slight Chance Showers And T-Storms
Lo 65 °F	Lo 60 °F	Lo 57 °F	Lo 59 °F	Lo 65 °F	Lo 67 °F	Lo 64 °F

Tonight	A chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 65. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Wednesday	Mostly sunny, with a high near 83. West wind 10 to 15 mph. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night	Mostly clear, with a low around 60. Northwest wind 5 to 10 mph.
Thursday	Sunny, with a high near 81. Northwest wind around 5 mph.
Thursday Night	Mostly clear, with a low around 57. North wind 0 to 5 mph.
Friday	Sunny, with a high near 80. Southeast wind 0 to 5 mph.
Friday Night	Partly cloudy, with a low around 59. South wind 0 to 5 mph.
Saturday	Partly sunny, with a high near 81. South wind 5 to 10 mph.
Saturday Night	A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Sunday	A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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 67. Chance of precipitation is 30%.
Monday	A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Monday Night	A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.
Tuesday	A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.

Forecast from NOAA-NWS for Cottage Grove, WI.