| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Thu, Mar-19-2026 10:34pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Patchy fog after midnight. Mostly cloudy, with a low around 37. Southwest wind around 5 mph. |
| Friday |
Patchy fog before 9am. Mostly cloudy, with a high near 55. Northwest wind 5 to 10 mph. |
| Friday Night |
Areas of fog after 1am. Mostly cloudy, with a low around 37. Northeast wind 0 to 5 mph. |
| Saturday |
Mostly sunny, with a high near 66. South wind 5 to 10 mph. |
| Saturday Night |
Partly cloudy, with a low around 44. South wind 5 to 10 mph. |
| Sunday |
A slight chance of rain between 7am and 1pm. Mostly cloudy, with a high near 52. Northeast wind 10 to 15 mph. Chance of precipitation is 20%. |
| Sunday Night |
Mostly cloudy, with a low around 27. North wind 5 to 15 mph. |
| Monday |
Mostly sunny, with a high near 46. North wind around 5 mph. |
| Monday Night |
Mostly cloudy, with a low around 31. |
| Tuesday |
Mostly cloudy, with a high near 53. |
| Tuesday Night |
Mostly cloudy, with a low around 33. |
| Wednesday |
Mostly cloudy, with a high near 52. |
| Wednesday Night |
A slight chance of rain after 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 20%. |
| Thursday |
A chance of rain. Mostly cloudy. High near 56, with temperatures falling to around 51 in the afternoon. Chance of precipitation is 30%. |
Forecast from NOAA-NWS for Cottage Grove, WI.