Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Aug-01-2026 7:18pm

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

Updated: Sat, Aug-01-2026 6:31pm CDT

Cottage Grove

	Sunday Partly Sunny	Monday Sunny	Tuesday Mostly Sunny	Wednesday Chance Showers And T-Storms	Thursday Slight Chance Rain Showers then Slight Chance Showers And T-Storms	Friday Slight Chance Rain Showers then Mostly Sunny	Saturday Chance Showers And T-Storms
	Hi 77 °F	Hi 80 °F	Hi 82 °F	Hi 78 °F	Hi 79 °F	Hi 83 °F	Hi 86 °F

Tonight Slight Chance Rain Showers then Mostly Cloudy	Sunday Night Mostly Clear	Monday Night Mostly Clear	Tuesday Night Slight Chance Showers And T-Storms	Wednesday Night Chance Showers And T-Storms	Thursday Night Slight Chance Showers And T-Storms	Friday Night Partly Cloudy then Slight Chance Showers And T-Storms
Lo 61 °F	Lo 54 °F	Lo 57 °F	Lo 62 °F	Lo 57 °F	Lo 61 °F	Lo 65 °F

Tonight	A slight chance of rain showers before 9pm. Mostly cloudy, with a low around 61. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday	Partly sunny, with a high near 77. Northeast wind around 10 mph.
Sunday Night	Mostly clear, with a low around 54. Northeast wind 0 to 10 mph.
Monday	Sunny, with a high near 80. Northeast wind 0 to 5 mph.
Monday Night	Mostly clear, with a low around 57. Southeast wind around 0 mph.
Tuesday	Mostly sunny, with a high near 82. Southwest wind 0 to 5 mph.
Tuesday Night	A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. West wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday	A chance of showers and thunderstorms. Partly sunny, with a high near 78. Northwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Thursday	A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Thursday Night	A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Friday	A slight chance of rain showers before 7am. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Friday Night	A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Saturday	A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.