| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sun, Oct-18-2026 12:31am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Clear, with a low around 38. Southwest wind around 10 mph. |
| Sunday |
Sunny, with a high near 62. Southwest wind around 15 mph, with gusts as high as 30 mph. |
| Sunday Night |
Clear, with a low around 40. Southwest wind 5 to 15 mph. |
| Monday |
Sunny, with a high near 65. Southwest wind 0 to 5 mph. |
| Monday Night |
Mostly clear, with a low around 39. West wind around 0 mph. |
| Tuesday |
Sunny, with a high near 67. Southeast wind 0 to 5 mph. |
| Tuesday Night |
Mostly clear, with a low around 43. Southeast wind 0 to 5 mph. |
| Wednesday |
Sunny, with a high near 69. South wind 0 to 5 mph. |
| Wednesday Night |
Mostly clear, with a low around 49. |
| Thursday |
Mostly sunny, with a high near 70. |
| Thursday Night |
Partly cloudy, with a low around 47. |
| Friday |
Mostly sunny, with a high near 70. |
| Friday Night |
Partly cloudy, with a low around 49. |
| Saturday |
Mostly sunny, with a high near 71. |
Forecast from NOAA-NWS for Cottage Grove, WI.