Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-03-2026 7:17pm

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

Updated: Wed, Jun-03-2026 6:12pm CDT

Cottage Grove

	Thursday Mostly Sunny	Friday Chance Showers And T-Storms then Showers And T-Storms	Saturday Rain Showers Likely then Slight Chance Showers And T-Storms	Sunday Mostly Sunny	Monday Mostly Sunny then Slight Chance Rain Showers	Tuesday Chance Showers And T-Storms	Wednesday Slight Chance Rain Showers then Slight Chance Showers And T-Storms
	Hi 85 °F	Hi 80 °F	Hi 84 °F	Hi 83 °F	Hi 87 °F	Hi 88 °F	Hi 90 °F

Tonight Mostly Clear	Thursday Night Chance Showers And T-Storms	Friday Night Showers And T-Storms Likely	Saturday Night Slight Chance Showers And T-Storms then Mostly Clear	Sunday Night Partly Cloudy	Monday Night Slight Chance Showers And T-Storms	Tuesday Night Chance Showers And T-Storms then Slight Chance Showers And T-Storms
Lo 57 °F	Lo 64 °F	Lo 62 °F	Lo 59 °F	Lo 59 °F	Lo 64 °F	Lo 65 °F

Tonight	Mostly clear, with a low around 57. South wind around 5 mph.
Thursday	Mostly sunny, with a high near 85. Southwest wind 5 to 15 mph.
Thursday Night	A chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 64. Southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday	A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 80. Southwest wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night	Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday	Rain showers likely before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Night	A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 59. East wind 0 to 5 mph. Chance of precipitation is 20%.
Sunday	Mostly sunny, with a high near 83. East wind 5 to 10 mph.
Sunday Night	Partly cloudy, with a low around 59.
Monday	A slight chance of rain showers after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Monday Night	A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Tuesday	A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night	A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 40%.
Wednesday	A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.

Forecast from NOAA-NWS for Cottage Grove, WI.