| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Wed, May-20-2026 2:36am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 44. Northwest wind around 5 mph. |
| Wednesday |
Mostly sunny, with a high near 62. North wind 5 to 10 mph. |
| Wednesday Night |
Partly cloudy, with a low around 40. East wind 5 to 10 mph. |
| Thursday |
Partly sunny, with a high near 60. East wind around 10 mph. |
| Thursday Night |
Mostly cloudy, with a low around 44. East wind 5 to 10 mph. |
| Friday |
A chance of rain showers after 1pm. Mostly cloudy, with a high near 63. East wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Friday Night |
Rain showers likely before 10pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 48. East wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Saturday |
Rain showers likely before 1pm. Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday Night |
Mostly cloudy, with a low around 51. |
| Sunday |
Partly sunny, with a high near 76. |
| Sunday Night |
Partly cloudy, with a low around 52. |
| Memorial Day |
Mostly sunny, with a high near 81. |
| Monday Night |
Partly cloudy, with a low around 56. |
| Tuesday |
Mostly sunny, with a high near 83. |
Forecast from NOAA-NWS for Cottage Grove, WI.