| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Tue, Mar-17-2026 3:32am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 0. Wind chill values as low as -11. Northwest wind around 10 mph. |
| Tuesday |
Mostly sunny, with a high near 21. Wind chill values as low as -13. West wind 5 to 10 mph. |
| Tuesday Night |
Snow after 8pm. Cloudy. Low around 16, with temperatures rising to around 21 overnight. South wind 5 to 15 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible. |
| Wednesday |
A slight chance of snow and a slight chance of freezing drizzle before 7am. Mostly cloudy, with a high near 40. Southwest wind 5 to 10 mph. Chance of precipitation is 20%. New snow accumulation of less than one inch possible. |
| Wednesday Night |
A chance of rain after 1am. Mostly cloudy, with a low around 32. Southwest wind around 5 mph. Chance of precipitation is 30%. |
| Thursday |
A chance of rain before 7am. Partly sunny, with a high near 44. West wind around 5 mph. Chance of precipitation is 30%. |
| Thursday Night |
Mostly cloudy, with a low around 33. Southwest wind 0 to 5 mph. |
| Friday |
Mostly cloudy, with a high near 49. Southwest wind 5 to 10 mph. |
| Friday Night |
Mostly cloudy, with a low around 34. |
| Saturday |
Mostly sunny, with a high near 59. |
| Saturday Night |
Mostly cloudy, with a low around 37. |
| Sunday |
Mostly cloudy, with a high near 51. |
| Sunday Night |
Mostly cloudy, with a low around 27. |
| Monday |
Mostly sunny, with a high near 43. |
Forecast from NOAA-NWS for Cottage Grove, WI.