Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: May-08-2026 11:28pm

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

Updated: Fri, May-08-2026 10:33pm CDT

Cottage Grove

	Saturday Chance Rain Showers	Sunday Mostly Sunny	Monday Areas Of Frost then Sunny	Tuesday Rain Showers	Wednesday Mostly Sunny	Thursday Mostly Sunny then Slight Chance Rain Showers	Friday Chance Showers And T-Storms
	Hi 66 °F	Hi 60 °F	Hi 60 °F	Hi 64 °F	Hi 64 °F	Hi 70 °F	Hi 78 °F

Tonight Slight Chance Rain Showers then Mostly Cloudy	Saturday Night Mostly Clear	Sunday Night Mostly Clear then Areas Of Frost	Monday Night Partly Cloudy then Chance Rain Showers	Tuesday Night Showers And T-Storms Likely	Wednesday Night Partly Cloudy	Thursday Night Chance Rain Showers
Lo 47 °F	Lo 39 °F	Lo 36 °F	Lo 40 °F	Lo 43 °F	Lo 43 °F	Lo 50 °F

Tonight	A slight chance of rain showers before midnight. Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday	A chance of rain showers between 11am and 4pm. Partly sunny, with a high near 66. West wind 10 to 15 mph. Chance of precipitation is 30%.
Saturday Night	Mostly clear, with a low around 39. Northwest wind 0 to 15 mph.
Sunday	Mostly sunny, with a high near 60. Northwest wind 0 to 15 mph.
Sunday Night	Areas of frost after 3am. Mostly clear, with a low around 36. North wind 0 to 10 mph.
Monday	Areas of frost before 7am. Sunny, with a high near 60. North wind 0 to 5 mph.
Monday Night	A chance of rain showers after 1am. Partly cloudy, with a low around 40. Southeast wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tuesday	Rain showers before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 64. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night	Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Wednesday	Mostly sunny, with a high near 64.
Wednesday Night	Partly cloudy, with a low around 43.
Thursday	A slight chance of rain showers after 1pm. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
Thursday Night	A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Friday	A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.