| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Wed, Mar-18-2026 1:07am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Snow. Cloudy, with a low around 17. South wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of less than half an inch possible. |
| Wednesday |
A chance of snow and a chance of freezing drizzle before 7am. Partly sunny, with a high near 39. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible. |
| Wednesday Night |
A slight chance of rain between 10pm and 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 32. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday |
A chance of rain before 7am. Partly sunny, with a high near 44. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday Night |
Mostly cloudy, with a low around 34. Southeast wind 0 to 5 mph. |
| Friday |
Mostly cloudy, with a high near 55. West wind 5 to 10 mph. |
| Friday Night |
Mostly cloudy, with a low around 38. Northwest wind around 5 mph. |
| Saturday |
Mostly sunny, with a high near 65. Southwest wind 5 to 10 mph. |
| Saturday Night |
A slight chance of rain after 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 20%. |
| Sunday |
A slight chance of rain before 7am. Partly sunny, with a high near 56. Chance of precipitation is 20%. |
| Sunday Night |
Partly cloudy, with a low around 25. |
| Monday |
Partly sunny, with a high near 42. |
| Monday Night |
Mostly cloudy, with a low around 26. |
| Tuesday |
Partly sunny, with a high near 48. |
Forecast from NOAA-NWS for Cottage Grove, WI.