Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-15-2026 5:49am

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

Updated: Mon, Jun-15-2026 2:37am CDT

Cottage Grove

	Monday Mostly Sunny	Tuesday Chance Showers And T-Storms then Showers And T-Storms Likely	Wednesday Showers And T-Storms	Thursday Slight Chance Rain Showers then Slight Chance Showers And T-Storms	Juneteenth Sunny then Slight Chance Rain Showers	Saturday Sunny then Slight Chance Showers And T-Storms	Sunday Chance Rain Showers
	Hi 74 °F	Hi 70 °F	Hi 70 °F	Hi 72 °F	Hi 73 °F	Hi 77 °F	Hi 74 °F

Overnight Mostly Cloudy	Monday Night Partly Cloudy then Slight Chance Showers And T-Storms	Tuesday Night Showers And T-Storms Likely then Mostly Clear	Wednesday Night Showers And T-Storms	Thursday Night Slight Chance Showers And T-Storms then Mostly Clear	Friday Night Slight Chance Showers And T-Storms	Saturday Night Chance Showers And T-Storms
Lo 48 °F	Lo 55 °F	Lo 51 °F	Lo 56 °F	Lo 52 °F	Lo 54 °F	Lo 56 °F

Overnight	Mostly cloudy, with a low around 48. West wind around 5 mph.
Monday	Mostly sunny, with a high near 74. West wind 5 to 10 mph.
Monday Night	A slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Tuesday	A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 70. Southwest wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night	Showers and thunderstorms likely before 10pm. Mostly clear, with a low around 51. West wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Wednesday	Rain showers likely between 7am and 1pm, then showers and thunderstorms. Mostly cloudy, with a high near 70. South wind 5 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night	Showers and thunderstorms. Mostly cloudy, with a low around 56. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday	A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 72. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Thursday Night	A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 52. Chance of precipitation is 20%.
Juneteenth	A slight chance of rain showers after 1pm. Sunny, with a high near 73. Chance of precipitation is 20%.
Friday Night	A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 54. Chance of precipitation is 20%.
Saturday	A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 77. Chance of precipitation is 20%.
Saturday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 40%.
Sunday	A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 74. Chance of precipitation is 40%.

Forecast from NOAA-NWS for Cottage Grove, WI.