| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Tue, Sep-08-2026 6:11pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
A slight chance of rain showers before 9pm, then showers and thunderstorms likely. Cloudy, with a low around 69. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible. |
| Wednesday |
Showers and thunderstorms likely before 10am. Partly sunny, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible. |
| Wednesday Night |
Mostly clear, with a low around 58. West wind around 5 mph. |
| Thursday |
Sunny, with a high near 76. Northwest wind around 5 mph. |
| Thursday Night |
Clear, with a low around 53. North wind around 0 mph. |
| Friday |
Sunny, with a high near 79. South wind 0 to 10 mph. |
| Friday Night |
A chance of rain showers after 1am. Mostly clear, with a low around 61. South wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 30%. |
| Sunday |
A chance of rain showers. Mostly sunny, with a high near 74. Chance of precipitation is 30%. |
| Sunday Night |
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 40%. |
| Monday |
Showers and thunderstorms likely. Partly sunny, with a high near 76. Chance of precipitation is 60%. |
| Monday Night |
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 70%. |
| Tuesday |
Showers and thunderstorms likely before 1pm. Partly sunny, with a high near 72. Chance of precipitation is 60%. |
Forecast from NOAA-NWS for Cottage Grove, WI.