| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Oct-19-2026 2:36am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Clear, with a low around 43. Southwest wind around 5 mph. |
| Monday |
Mostly sunny, with a high near 66. Southwest wind 0 to 5 mph. |
| Monday Night |
Partly cloudy, with a low around 42. East wind around 0 mph. |
| Tuesday |
Mostly sunny, with a high near 66. East wind 0 to 5 mph. |
| Tuesday Night |
Mostly clear, with a low around 44. Southeast wind 0 to 5 mph. |
| Wednesday |
Sunny, with a high near 69. Southwest wind 0 to 5 mph. |
| Wednesday Night |
Mostly clear, with a low around 48. Southwest wind around 0 mph. |
| Thursday |
Sunny, with a high near 70. Southeast wind 0 to 5 mph. |
| Thursday Night |
Mostly clear, with a low around 49. |
| Friday |
Mostly sunny, with a high near 68. |
| Friday Night |
Partly cloudy, with a low around 51. |
| Saturday |
Partly sunny, with a high near 69. |
| Saturday Night |
Mostly cloudy, with a low around 52. |
| Sunday |
Partly sunny, with a high near 67. |
Forecast from NOAA-NWS for Cottage Grove, WI.