Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-12-2026 1:23am

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

Updated: Fri, Jun-12-2026 12:32am CDT

Cottage Grove

	Friday Sunny	Saturday Mostly Sunny then Chance Showers And T-Storms	Sunday Chance Rain Showers then Sunny	Monday Sunny	Tuesday Mostly Sunny then Chance Showers And T-Storms	Wednesday Slight Chance Rain Showers then Chance Showers And T-Storms	Thursday Chance Rain Showers
	Hi 78 °F	Hi 81 °F	Hi 69 °F	Hi 73 °F	Hi 75 °F	Hi 78 °F	Hi 79 °F

Overnight Mostly Clear	Friday Night Mostly Clear	Saturday Night Chance Showers And T-Storms then Showers And T-Storms Likely	Sunday Night Mostly Clear	Monday Night Partly Cloudy	Tuesday Night Chance Showers And T-Storms	Wednesday Night Chance Showers And T-Storms then Showers And T-Storms Likely
Lo 54 °F	Lo 59 °F	Lo 54 °F	Lo 50 °F	Lo 52 °F	Lo 55 °F	Lo 59 °F

Overnight	Mostly clear, with a low around 54. West wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
Friday	Sunny, with a high near 78. West wind 10 to 15 mph.
Friday Night	Mostly clear, with a low around 59. Southwest wind 5 to 10 mph.
Saturday	A chance of showers and thunderstorms between 1pm and 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers and thunderstorms likely. Mostly sunny, with a high near 81. Southwest wind 10 to 15 mph. Chance of precipitation is 60%. 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 54. Northwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday	A chance of rain showers before 7am. Sunny, with a high near 69. Northwest wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Sunday Night	Mostly clear, with a low around 50. West wind 5 to 10 mph.
Monday	Sunny, with a high near 73. West wind 5 to 10 mph.
Monday Night	Partly cloudy, with a low around 52.
Tuesday	A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75. Chance of precipitation is 40%.
Tuesday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 40%.
Wednesday	A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 40%.
Wednesday Night	A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Thursday	A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 50%.

Forecast from NOAA-NWS for Cottage Grove, WI.