Cottage Grove, WI Weather

59°F

Cottage Grove, WI

Updated: Jun-18-2026 8:31am

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

Updated: Thu, Jun-18-2026 7:33am CDT

Cottage Grove

Today Mostly Sunny	Juneteenth Sunny	Saturday Sunny	Sunday Chance Rain Showers	Monday Slight Chance Rain Showers then Mostly Sunny	Tuesday Sunny	Wednesday Chance Rain Showers
Hi 71 °F	Hi 75 °F	Hi 77 °F	Hi 73 °F	Hi 73 °F	Hi 75 °F	Hi 76 °F

Tonight Slight Chance Showers And T-Storms then Mostly Clear	Friday Night Chance Showers And T-Storms	Saturday Night Partly Cloudy	Sunday Night Chance Rain Showers	Monday Night Partly Cloudy	Tuesday Night Chance Showers And T-Storms	Wednesday Night Chance Showers And T-Storms then Slight Chance Showers And T-Storms
Lo 53 °F	Lo 55 °F	Lo 55 °F	Lo 51 °F	Lo 51 °F	Lo 55 °F	Lo 56 °F

Today	Mostly sunny, with a high near 71. Northwest wind around 10 mph.
Tonight	A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 53. West wind 5 to 10 mph. Chance of precipitation is 20%.
Juneteenth	Sunny, with a high near 75. Northwest wind 5 to 10 mph.
Friday Night	A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 55. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Saturday	Sunny, with a high near 77. West wind 5 to 10 mph.
Saturday Night	Partly cloudy, with a low around 55. North wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible.
Sunday	A chance of rain showers after 7am. Mostly cloudy, with a high near 73. East wind 0 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night	A chance of rain showers. Mostly cloudy, with a low around 51. Northeast wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday	A slight chance of rain showers before 7am. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
Monday Night	Partly cloudy, with a low around 51.
Tuesday	Sunny, with a high near 75.
Tuesday Night	A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Wednesday	A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
Wednesday Night	A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.