| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Tue, Sep-01-2026 2:46pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 95. Southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
Partly cloudy, with a low around 72. Southwest wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
Partly sunny, with a high near 89. Heat index values as high as 95. Southwest wind 0 to 10 mph. |
| Wednesday Night |
A chance of showers and thunderstorms between 1am and 2am, then a slight chance of showers and thunderstorms between 2am and 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday |
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 87. Southwest wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday Night |
A chance of showers and thunderstorms between 7pm and 10pm, then showers and thunderstorms likely. Partly cloudy, with a low around 69. Southeast wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday |
Showers and thunderstorms likely before 1pm. Partly sunny, with a high near 86. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. Southeast wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 50%. |
| Saturday Night |
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 20%. |
| Sunday |
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 40%. |
| Sunday Night |
A slight chance of rain showers. Mostly cloudy, with a low around 63. Chance of precipitation is 20%. |
| Labor Day |
A slight chance of rain showers. Partly sunny, with a high near 78. Chance of precipitation is 20%. |
| Monday Night |
A slight chance of rain showers. Mostly cloudy, with a low around 59. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.






