| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sat, Sep-05-2026 8:42pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Patchy fog after 2am. Partly cloudy, with a low around 60. Northeast wind 0 to 5 mph. |
| Sunday |
Patchy fog before 8am. Mostly sunny, with a high near 79. East wind around 5 mph. |
| Sunday Night |
Mostly clear, with a low around 57. East wind 0 to 5 mph. |
| Labor Day |
Mostly sunny, with a high near 78. Southeast wind 0 to 10 mph. |
| Monday Night |
Partly cloudy, with a low around 60. Southeast wind around 5 mph. |
| Tuesday |
Partly sunny, with a high near 84. South wind around 10 mph. |
| Tuesday Night |
A slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 69. Southwest wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
Showers and thunderstorms likely before 1pm. Partly sunny, with a high near 84. West wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday Night |
Partly cloudy, with a low around 59. |
| Thursday |
Mostly sunny, with a high near 78. |
| Thursday Night |
Mostly clear, with a low around 55. |
| Friday |
Mostly sunny, with a high near 79. |
| Friday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 20%. |
| Saturday |
A slight chance of rain showers before 7am. Mostly sunny, with a high near 81. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.