| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Wed, Oct-21-2026 2:41pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Patchy fog after 2am. Mostly clear, with a low around 46. West wind 0 to 5 mph. |
| Thursday |
Areas of fog before 9am. Sunny, with a high near 73. East wind 0 to 5 mph. |
| Thursday Night |
Patchy fog after 1am. Partly cloudy, with a low around 48. Southeast wind 0 to 5 mph. |
| Friday |
Patchy fog before 8am. Mostly sunny, with a high near 72. Southeast wind 0 to 5 mph. |
| Friday Night |
Partly cloudy, with a low around 51. Southeast wind around 5 mph. |
| Saturday |
Partly sunny, with a high near 72. South wind 5 to 15 mph. |
| Saturday Night |
Mostly cloudy, with a low around 53. South wind 5 to 10 mph. |
| Sunday |
Partly sunny, with a high near 71. Southwest wind around 5 mph. |
| Sunday Night |
Mostly cloudy, with a low around 50. |
| Monday |
A slight chance of rain showers after 1pm. Partly sunny, with a high near 62. Chance of precipitation is 20%. |
| Monday Night |
A chance of rain showers. Mostly cloudy, with a low around 43. Chance of precipitation is 30%. |
| Tuesday |
A chance of rain showers. Partly sunny, with a high near 58. Chance of precipitation is 30%. |
| Tuesday Night |
A slight chance of rain showers before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 20%. |
| Wednesday |
Partly sunny, with a high near 62. |
Forecast from NOAA-NWS for Cottage Grove, WI.