| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sun, Sep-20-2026 7:33pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Mostly cloudy, with a low around 54. Northeast wind 10 to 15 mph. |
| Monday |
Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph. |
| Monday Night |
Mostly cloudy, with a low around 48. Northeast wind 5 to 10 mph. |
| Tuesday |
Partly sunny, with a high near 62. Northeast wind around 10 mph. |
| Tuesday Night |
Mostly clear, with a low around 45. Northeast wind 5 to 10 mph. |
| Wednesday |
Mostly sunny, with a high near 64. Northeast wind 5 to 10 mph. |
| Wednesday Night |
Mostly clear, with a low around 46. Northeast wind 0 to 5 mph. |
| Thursday |
Mostly sunny, with a high near 65. East wind 0 to 5 mph. |
| Thursday Night |
Mostly cloudy, with a low around 48. |
| Friday |
Partly sunny, with a high near 67. |
| Friday Night |
Mostly cloudy, with a low around 48. |
| Saturday |
Partly sunny, with a high near 69. |
| Saturday Night |
Mostly cloudy, with a low around 50. |
| Sunday |
Partly sunny, with a high near 71. |
Forecast from NOAA-NWS for Cottage Grove, WI.