Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Jun-21-2026 7:02am

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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 5:57am CDT

Cottage Grove

Today Mostly Cloudy then Rain Showers Likely	Monday Mostly Sunny	Tuesday Mostly Sunny	Wednesday Showers And T-Storms Likely	Thursday Mostly Sunny then Slight Chance Showers And T-Storms	Friday Mostly Sunny	Saturday Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Hi 71 °F	Hi 76 °F	Hi 76 °F	Hi 76 °F	Hi 75 °F	Hi 78 °F	Hi 80 °F

Tonight Chance Rain Showers then Mostly Cloudy	Monday Night Mostly Clear	Tuesday Night Slight Chance Showers And T-Storms	Wednesday Night Showers And T-Storms Likely then Slight Chance Showers And T-Storms	Thursday Night Slight Chance Showers And T-Storms then Partly Cloudy	Friday Night Partly Cloudy then Slight Chance Showers And T-Storms	Saturday Night Chance Showers And T-Storms
Lo 54 °F	Lo 51 °F	Lo 56 °F	Lo 55 °F	Lo 54 °F	Lo 57 °F	Lo 63 °F

Today	Rain showers likely after noon. Mostly cloudy. High near 71, with temperatures falling to around 66 in the afternoon. East wind 0 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight	A chance of rain showers before midnight. Mostly cloudy, with a low around 54. Northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Monday	Mostly sunny, with a high near 76. Northeast wind around 10 mph.
Monday Night	Mostly clear, with a low around 51. Northeast wind 0 to 10 mph.
Tuesday	Mostly sunny, with a high near 76. South wind 0 to 5 mph.
Tuesday Night	A slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 56. South wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday	Showers and thunderstorms likely. Partly sunny, with a high near 76. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday Night	Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 55. West wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Thursday	A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
Thursday Night	A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 54. Chance of precipitation is 20%.
Friday	Mostly sunny, with a high near 78.
Friday Night	A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Saturday	A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Saturday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 40%.

Forecast from NOAA-NWS for Cottage Grove, WI.