Cottage Grove, WI Weather

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Cottage Grove, WI

Updated: Aug-25-2026 2:24am

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

Updated: Mon, Aug-24-2026 11:46pm CDT

Cottage Grove

	Tuesday Patchy Fog then Mostly Sunny	Wednesday Mostly Sunny	Thursday Sunny	Friday Sunny	Saturday Slight Chance Rain Showers	Sunday Chance Showers And T-Storms	Monday Chance Showers And T-Storms
	Hi 80 °F	Hi 82 °F	Hi 80 °F	Hi 80 °F	Hi 80 °F	Hi 83 °F	Hi 83 °F

Overnight Patchy Fog	Tuesday Night Partly Cloudy then Chance Showers And T-Storms	Wednesday Night Mostly Clear	Thursday Night Mostly Clear	Friday Night Partly Cloudy	Saturday Night Chance Showers And T-Storms	Sunday Night Slight Chance Showers And T-Storms
Lo 55 °F	Lo 63 °F	Lo 61 °F	Lo 58 °F	Lo 60 °F	Lo 64 °F	Lo 68 °F

Overnight	Patchy fog after 1am. Mostly clear, with a low around 55. South wind around 0 mph.
Tuesday	Patchy fog before 8am. Mostly sunny, with a high near 80. Southwest wind 0 to 10 mph.
Tuesday Night	A chance of showers and thunderstorms between 1am and 5am. Partly cloudy, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday	Mostly sunny, with a high near 82. West wind around 10 mph. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday Night	Mostly clear, with a low around 61. Northwest wind 5 to 10 mph.
Thursday	Sunny, with a high near 80. Northwest wind around 5 mph.
Thursday Night	Mostly clear, with a low around 58. North wind 0 to 5 mph.
Friday	Sunny, with a high near 80. Southeast wind 0 to 5 mph.
Friday Night	Partly cloudy, with a low around 60.
Saturday	A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Saturday Night	A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Sunday	A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Sunday 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 68. Chance of precipitation is 40%.
Monday	A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.

Forecast from NOAA-NWS for Cottage Grove, WI.