| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Aug-24-2026 5:07am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Patchy fog. Mostly clear, with a low around 49. Wind around 0 mph. |
| Monday |
Mostly sunny, with a high near 78. North wind 0 to 5 mph. |
| Monday Night |
Mostly clear, with a low around 55. South wind 0 to 5 mph. |
| Tuesday |
Mostly sunny, with a high near 81. Southwest wind 0 to 10 mph. |
| Tuesday Night |
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind 5 to 10 mph. Chance of precipitation is 40%. |
| Wednesday |
A chance of rain showers before 7am. Sunny, with a high near 83. West wind around 10 mph. Chance of precipitation is 40%. |
| Wednesday Night |
Mostly clear, with a low around 60. Northwest wind 5 to 10 mph. |
| Thursday |
Sunny, with a high near 81. Northwest wind around 5 mph. |
| Thursday Night |
Mostly clear, with a low around 57. |
| Friday |
Sunny, with a high near 80. |
| Friday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 20%. |
| Saturday |
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 30%. |
| Saturday Night |
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. |
| Sunday |
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 50%. |
Forecast from NOAA-NWS for Cottage Grove, WI.