Cottage Grove, WI Weather

55°F

Cottage Grove, WI

Updated: May-13-2026 9:02pm

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

Updated: Wed, May-13-2026 7:33pm CDT

Cottage Grove

	Thursday Sunny	Friday Mostly Sunny	Saturday Chance Showers And T-Storms	Sunday Showers And T-Storms Likely	Monday Chance Showers And T-Storms	Tuesday Showers And T-Storms Likely	Wednesday Chance Rain Showers
	Hi 70 °F	Hi 79 °F	Hi 82 °F	Hi 78 °F	Hi 85 °F	Hi 74 °F	Hi 69 °F

Tonight Mostly Clear	Thursday Night Chance Rain Showers	Friday Night Chance Showers And T-Storms	Saturday Night Slight Chance Showers And T-Storms then Chance Showers And T-Storms	Sunday Night Showers And T-Storms Likely then Chance Showers And T-Storms	Monday Night Chance Showers And T-Storms then Showers And T-Storms Likely	Tuesday Night Chance Rain Showers
Lo 38 °F	Lo 50 °F	Lo 55 °F	Lo 53 °F	Lo 60 °F	Lo 59 °F	Lo 50 °F

Tonight	Mostly clear, with a low around 38. North wind 0 to 5 mph.
Thursday	Sunny, with a high near 70. Southeast wind 0 to 5 mph.
Thursday Night	A chance of rain showers between 10pm and 4am. Mostly cloudy, with a low around 50. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday	Mostly sunny, with a high near 79. South wind 10 to 15 mph, with gusts as high as 30 mph. New rainfall amounts less than a tenth of an inch possible.
Friday Night	A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday	A chance of showers and thunderstorms. Mostly sunny, with a high near 82. West wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night	A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 53. East wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday	A chance of rain showers before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 78. East wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night	Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Monday	A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday 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%.
Tuesday	Showers and thunderstorms likely. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Tuesday Night	A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Wednesday	A chance of rain showers before 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.