Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-21-2026 7:13pm

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

Updated: Sun, Jun-21-2026 5:22pm CDT

Cottage Grove

	Monday Mostly Sunny	Tuesday Mostly Sunny	Wednesday Showers And T-Storms Likely	Thursday Mostly Sunny then Slight Chance Rain Showers	Friday Mostly Sunny	Saturday Slight Chance Rain Showers	Sunday Chance Rain Showers
	Hi 76 °F	Hi 77 °F	Hi 77 °F	Hi 75 °F	Hi 77 °F	Hi 79 °F	Hi 84 °F

Tonight Rain Showers Likely then Mostly Cloudy	Monday Night Mostly Clear	Tuesday Night Mostly Cloudy then Rain Showers Likely	Wednesday Night Showers And T-Storms Likely	Thursday Night Slight Chance Rain Showers then Mostly Clear	Friday Night Slight Chance Rain Showers	Saturday Night Chance Showers And T-Storms
Lo 55 °F	Lo 51 °F	Lo 57 °F	Lo 57 °F	Lo 55 °F	Lo 57 °F	Lo 62 °F

Tonight	Rain showers likely before 10pm. Mostly cloudy, with a low around 55. Northeast wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday	Mostly sunny, with a high near 76. North wind 5 to 10 mph.
Monday Night	Mostly clear, with a low around 51. East wind 0 to 5 mph.
Tuesday	Mostly sunny, with a high near 77. Southeast wind 0 to 5 mph.
Tuesday Night	Rain showers likely after 1am. Mostly cloudy, with a low around 57. South wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Wednesday	Rain showers likely before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 77. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night	Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 57. West wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Thursday	A slight chance of rain showers after 1pm. Mostly sunny, with a high near 75. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night	A slight chance of rain showers before 7pm. Mostly clear, with a low around 55. Chance of precipitation is 20%.
Friday	Mostly sunny, with a high near 77.
Friday Night	A slight chance of rain showers after 7pm. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Saturday	A slight chance of rain showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Saturday Night	A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Sunday	A chance of rain showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.