Cottage Grove, WI Weather

72°F

Cottage Grove, WI

Updated: Aug-11-2026 12:56am

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

Updated: Tue, Aug-11-2026 12:01am CDT

Cottage Grove

	Tuesday Showers And T-Storms Likely	Wednesday Chance Showers And T-Storms	Thursday Chance Showers And T-Storms	Friday Partly Sunny	Saturday Showers And T-Storms Likely	Sunday Rain Showers Likely	Monday Mostly Sunny
	Hi 82 °F	Hi 83 °F	Hi 80 °F	Hi 76 °F	Hi 77 °F	Hi 77 °F	Hi 77 °F

Overnight Slight Chance Showers And T-Storms	Tuesday Night Partly Cloudy then Patchy Fog	Wednesday Night Slight Chance Rain Showers then Partly Cloudy	Thursday Night Slight Chance Showers And T-Storms then Mostly Cloudy	Friday Night Chance Showers And T-Storms	Saturday Night Chance Showers And T-Storms then Showers And T-Storms Likely	Sunday Night Slight Chance Rain Showers
Lo 67 °F	Lo 65 °F	Lo 65 °F	Lo 60 °F	Lo 59 °F	Lo 63 °F	Lo 60 °F

Overnight	A slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 67. East wind around 0 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tuesday	Showers and thunderstorms likely before 9am, then showers and thunderstorms between 9am and 10am, then showers and thunderstorms likely between 10am and 3pm. Mostly cloudy, with a high near 82. Southeast wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night	Patchy fog after 2am. Partly cloudy, with a low around 65. Southeast wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Wednesday	Patchy fog before 9am, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night	A slight chance of rain showers before 7pm. Partly cloudy, with a low around 65. Northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Thursday	A chance of rain showers between 7am and 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night	A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 60. Northeast wind 0 to 5 mph. Chance of precipitation is 20%.
Friday	Partly sunny, with a high near 76. East wind 5 to 10 mph.
Friday Night	A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday	Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Saturday Night	A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Sunday	Rain showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night	A slight chance of rain showers before 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 20%.
Monday	Mostly sunny, with a high near 77.

Forecast from NOAA-NWS for Cottage Grove, WI.