| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sat, Aug-22-2026 1:21am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 59. Northwest wind around 5 mph. |
| Saturday |
Sunny, with a high near 78. Northwest wind 5 to 15 mph. |
| Saturday Night |
Mostly clear, with a low around 54. Northwest wind 5 to 10 mph. |
| Sunday |
Sunny, with a high near 74. Northwest wind 5 to 10 mph. |
| Sunday Night |
Mostly clear, with a low around 52. North wind 0 to 5 mph. |
| Monday |
Mostly sunny, with a high near 76. North wind around 0 mph. |
| Monday Night |
Mostly clear, with a low around 56. South wind around 0 mph. |
| Tuesday |
Mostly sunny, with a high near 79. South wind 0 to 10 mph. |
| Tuesday Night |
A slight chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%. |
| Wednesday |
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 30%. |
| Wednesday Night |
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 61. Chance of precipitation is 30%. |
| Thursday |
Sunny, with a high near 81. |
| Thursday Night |
Mostly clear, with a low around 60. |
| Friday |
Mostly sunny, with a high near 81. |
Forecast from NOAA-NWS for Cottage Grove, WI.