Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-09-2026 6:15pm

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

Updated: Tue, Jun-09-2026 5:38pm CDT

Cottage Grove

	Wednesday Chance Showers And T-Storms	Thursday Showers And T-Storms	Friday Sunny	Saturday Sunny then Chance Showers And T-Storms	Sunday Chance Rain Showers	Monday Slight Chance Rain Showers then Slight Chance Showers And T-Storms	Tuesday Mostly Sunny then Chance Showers And T-Storms
	Hi 89 °F	Hi 84 °F	Hi 78 °F	Hi 82 °F	Hi 75 °F	Hi 73 °F	Hi 74 °F

Tonight Chance Rain Showers then Chance Showers And T-Storms	Wednesday Night Showers And T-Storms Likely then Chance Showers And T-Storms	Thursday Night Showers And T-Storms	Friday Night Clear	Saturday Night Chance Showers And T-Storms then Showers And T-Storms Likely	Sunday Night Slight Chance Rain Showers	Monday Night Slight Chance Showers And T-Storms then Partly Cloudy
Lo 67 °F	Lo 66 °F	Lo 56 °F	Lo 58 °F	Lo 57 °F	Lo 52 °F	Lo 52 °F

Tonight	A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 2am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday	A chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 95. South wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night	Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 1am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 66. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday	A chance of rain showers between 7am and 1pm, then showers and thunderstorms. Partly sunny. High near 84, with temperatures falling to around 79 in the afternoon. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night	Showers and thunderstorms before 1am. Mostly cloudy, with a low around 56. West wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday	Sunny, with a high near 78. West wind 10 to 15 mph.
Friday Night	Clear, with a low around 58. West wind 5 to 10 mph.
Saturday	A chance of showers and thunderstorms after 1pm. Sunny, with a high near 82. Southwest wind 5 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night	A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday	A chance of rain showers. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Sunday Night	A slight chance of rain showers. Mostly cloudy, with a low around 52. Chance of precipitation is 20%.
Monday	A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 73. Chance of precipitation is 20%.
Monday Night	A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Tuesday	A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.