Cottage Grove, WI Weather

65°F

Cottage Grove, WI

Updated: Aug-09-2026 12:24am

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

Updated: Sat, Aug-08-2026 11:31pm CDT

Cottage Grove

	Sunday Chance Showers And T-Storms then Showers And T-Storms Likely	Monday Patchy Fog then Chance Showers And T-Storms	Tuesday Showers And T-Storms Likely	Wednesday Chance Showers And T-Storms	Thursday Slight Chance Rain Showers then Partly Sunny	Friday Mostly Sunny then Slight Chance Showers And T-Storms	Saturday Chance Showers And T-Storms
	Hi 79 °F	Hi 82 °F	Hi 82 °F	Hi 80 °F	Hi 76 °F	Hi 73 °F	Hi 73 °F

Overnight Mostly Clear	Sunday Night Chance Showers And T-Storms then Patchy Fog	Monday Night Chance Showers And T-Storms then Showers And T-Storms Likely	Tuesday Night Slight Chance Showers And T-Storms	Wednesday Night Chance Showers And T-Storms	Thursday Night Partly Cloudy	Friday Night Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Lo 61 °F	Lo 65 °F	Lo 65 °F	Lo 64 °F	Lo 61 °F	Lo 57 °F	Lo 55 °F

Overnight	Mostly clear, with a low around 61. South wind 0 to 5 mph.
Sunday	A chance of showers and thunderstorms between 8am and 11am, then showers and thunderstorms likely between 11am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night	A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and midnight, then patchy fog. Mostly cloudy, with a low around 65. East wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday	Patchy fog before 8am, then a chance of showers and thunderstorms between 1pm and 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. East wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Monday Night	A chance of showers and thunderstorms before 10pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 65. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday	Showers and thunderstorms likely. Partly sunny, with a high near 82. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night	A chance of rain showers before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. East wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday	A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 80. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Wednesday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Thursday	A slight chance of rain showers before 7am. Partly sunny, with a high near 76. Chance of precipitation is 20%.
Thursday Night	Partly cloudy, with a low around 57.
Friday	A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
Friday Night	A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday	A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.