| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sun, Aug-23-2026 8:56pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Patchy fog after 2am. Mostly clear, with a low around 49. Northwest wind around 0 mph. |
| Monday |
Patchy fog before 8am. Sunny, with a high near 78. North wind 0 to 5 mph. |
| Monday Night |
Mostly clear, with a low around 56. Southwest wind around 0 mph. |
| Tuesday |
Mostly sunny, with a high near 81. Southwest wind 0 to 10 mph. |
| Tuesday Night |
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday Night |
Mostly clear, with a low around 62. West wind 5 to 10 mph. |
| Thursday |
Sunny, with a high near 81. Northwest wind 5 to 10 mph. |
| Thursday Night |
Mostly clear, with a low around 59. |
| Friday |
Mostly sunny, with a high near 81. |
| Friday Night |
Partly cloudy, with a low around 59. |
| Saturday |
A chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%. |
| Saturday Night |
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 63. Chance of precipitation is 50%. |
| Sunday |
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%. |
Forecast from NOAA-NWS for Cottage Grove, WI.