| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, Sep-04-2026 6:36pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
A slight chance of showers and thunderstorms between 11pm and 1am, then patchy fog. Partly cloudy, with a low around 69. Northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
Patchy fog before 9am. Partly sunny, with a high near 82. Northeast wind 5 to 10 mph. |
| Saturday Night |
Mostly clear, with a low around 59. Northeast wind 0 to 10 mph. |
| Sunday |
Mostly sunny, with a high near 80. East wind 0 to 5 mph. |
| Sunday Night |
Partly cloudy, with a low around 57. East wind 0 to 5 mph. |
| Labor Day |
Mostly sunny, with a high near 80. Southeast wind 0 to 5 mph. |
| Monday Night |
Mostly cloudy, with a low around 61. Southeast wind around 5 mph. |
| Tuesday |
A slight chance of rain showers after 7am. Partly sunny, with a high near 84. South wind around 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 70%. |
| Wednesday |
Showers and thunderstorms likely before 7am. Partly sunny, with a high near 85. Chance of precipitation is 70%. |
| Wednesday Night |
Partly cloudy, with a low around 61. |
| Thursday |
Mostly sunny, with a high near 77. |
| Thursday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 56. Chance of precipitation is 20%. |
| Friday |
A slight chance of rain showers before 1pm. Partly sunny, with a high near 78. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.