Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: May-09-2026 7:02pm

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

Updated: Sat, May-09-2026 2:36pm CDT

Cottage Grove

	Sunday Mostly Sunny then Chance Rain Showers	Monday Areas Of Frost then Sunny	Tuesday Showers And T-Storms	Wednesday Mostly Sunny	Thursday Sunny	Friday Chance Showers And T-Storms	Saturday Mostly Sunny then Slight Chance Rain Showers
	Hi 58 °F	Hi 60 °F	Hi 73 °F	Hi 62 °F	Hi 68 °F	Hi 77 °F	Hi 83 °F

Tonight Mostly Clear	Sunday Night Chance Rain Showers then Areas Of Frost	Monday Night Partly Cloudy then Slight Chance Rain And Snow Showers	Tuesday Night Chance Showers And T-Storms then Mostly Clear	Wednesday Night Partly Cloudy	Thursday Night Chance Showers And T-Storms	Friday Night Slight Chance Rain Showers
Lo 38 °F	Lo 35 °F	Lo 40 °F	Lo 46 °F	Lo 40 °F	Lo 48 °F	Lo 54 °F

Tonight	Mostly clear, with a low around 38. Northwest wind 5 to 15 mph.
Sunday	A chance of rain showers after 2pm. Mostly sunny, with a high near 58. Northwest wind 5 to 15 mph.
Sunday Night	A chance of rain showers before 7pm, then areas of frost. Mostly clear, with a low around 35. North wind 0 to 10 mph.
Monday	Areas of frost before 7am. Sunny, with a high near 60. Northeast wind 0 to 5 mph.
Monday Night	A slight chance of rain and snow showers after 1am. Partly cloudy, with a low around 40. Southeast wind 0 to 10 mph. Chance of precipitation is 20%.
Tuesday	A slight chance of rain showers before 7am, then showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 73. Southwest wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night	A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 46. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Wednesday	Mostly sunny, with a high near 62. Northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night	Partly cloudy, with a low around 40.
Thursday	Sunny, with a high near 68.
Thursday Night	A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Friday	A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%.
Friday Night	A slight chance of rain showers before 1am. Partly cloudy, with a low around 54. Chance of precipitation is 20%.
Saturday	A slight chance of rain showers after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.

Forecast from NOAA-NWS for Cottage Grove, WI.