| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Tue, May-19-2026 1:22am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Scattered showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
A chance of showers and thunderstorms before 11am. Mostly cloudy. High near 69, with temperatures falling to around 63 in the afternoon. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
Partly cloudy, with a low around 43. Northwest wind 5 to 15 mph. |
| Wednesday |
Mostly sunny, with a high near 61. North wind 5 to 10 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 39. East wind 5 to 10 mph. |
| Thursday |
Partly sunny, with a high near 60. East wind 5 to 10 mph. |
| Thursday Night |
Mostly cloudy, with a low around 43. East wind 5 to 10 mph. |
| Friday |
A chance of rain showers after 7am. Mostly cloudy, with a high near 61. East wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Friday Night |
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 50%. |
| Saturday |
A slight chance of rain showers before 7am. Partly sunny, with a high near 70. Chance of precipitation is 20%. |
| Saturday Night |
Mostly cloudy, with a low around 49. |
| Sunday |
Mostly sunny, with a high near 77. |
| Sunday Night |
Partly cloudy, with a low around 54. |
| Memorial Day |
Mostly sunny, with a high near 82. |
Forecast from NOAA-NWS for Cottage Grove, WI.