Cottage Grove, WI Weather

64°F

Cottage Grove, WI

Updated: Aug-06-2026 1:55am

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

Updated: Thu, Aug-06-2026 1:21am CDT

Cottage Grove

	Thursday Areas Of Fog then Partly Sunny	Friday Patchy Fog then Mostly Sunny	Saturday Sunny	Sunday Chance Showers And T-Storms	Monday Chance Showers And T-Storms then Showers And T-Storms Likely	Tuesday Chance Rain Showers	Wednesday Chance Rain Showers then Slight Chance Showers And T-Storms
	Hi 81 °F	Hi 84 °F	Hi 82 °F	Hi 83 °F	Hi 83 °F	Hi 81 °F	Hi 79 °F

Overnight Areas Of Fog	Thursday Night Partly Cloudy then Patchy Fog	Friday Night Chance Showers And T-Storms	Saturday Night Partly Cloudy then Chance Showers And T-Storms	Sunday Night Partly Cloudy then Chance Showers And T-Storms	Monday Night Chance Showers And T-Storms	Tuesday Night Chance Showers And T-Storms
Lo 60 °F	Lo 63 °F	Lo 64 °F	Lo 64 °F	Lo 65 °F	Lo 63 °F	Lo 61 °F

Overnight	Areas of fog. Mostly cloudy, with a low around 60. Northwest wind around 0 mph.
Thursday	Areas of fog before 9am. Partly sunny, with a high near 81. East wind 0 to 5 mph.
Thursday Night	Patchy fog after 2am. Partly cloudy, with a low around 63. South wind 0 to 5 mph.
Friday	Patchy fog before 8am. Mostly sunny, with a high near 84. South wind 0 to 10 mph.
Friday Night	A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 64. West wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday	Sunny, with a high near 82. Northwest wind around 5 mph.
Saturday Night	A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. Southwest wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Sunday	A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday Night	A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 50%.
Monday	A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Monday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Tuesday	A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night	A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Wednesday	A 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 30%.

Forecast from NOAA-NWS for Cottage Grove, WI.