| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Thu, Oct-15-2026 8:36am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Today |
Rain showers before noon, then rain showers and patchy fog. Cloudy, with a high near 58. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible. |
| Tonight |
Rain showers and patchy fog before 2am. Cloudy, with a low around 45. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible. |
| Friday |
A chance of rain showers between 8am and 1pm. Mostly cloudy, with a high near 53. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Friday Night |
Widespread frost after 1am. Mostly clear, with a low around 30. Northwest wind 0 to 20 mph, with gusts as high as 30 mph. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
Widespread frost before 9am. Sunny, with a high near 56. West wind 0 to 10 mph. |
| Saturday Night |
Clear, with a low around 38. Southwest wind 10 to 15 mph. |
| Sunday |
Sunny, with a high near 63. Southwest wind around 15 mph, with gusts as high as 25 mph. |
| Sunday Night |
Mostly clear, with a low around 41. Southwest wind 5 to 10 mph. |
| Monday |
Mostly sunny, with a high near 65. |
| Monday Night |
Partly cloudy, with a low around 41. |
| Tuesday |
Mostly sunny, with a high near 68. |
| Tuesday Night |
Mostly clear, with a low around 43. |
| Wednesday |
Mostly sunny, with a high near 69. |
| Wednesday Night |
A chance of rain showers after 7pm. Partly cloudy, with a low around 48. Chance of precipitation is 30%. |
Forecast from NOAA-NWS for Cottage Grove, WI.