| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, May-15-2026 8:52am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Today |
Sunny, with a high near 78. South wind around 15 mph, with gusts as high as 30 mph. |
| Tonight |
A chance of showers and thunderstorms between 11pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 56. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Saturday |
Mostly sunny, with a high near 83. West wind 5 to 10 mph. New rainfall amounts between a tenth and quarter of an inch possible. |
| Saturday Night |
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 55. Northeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Sunday |
Rain showers likely before 10am, then showers and thunderstorms likely. Mostly cloudy, with a high near 82. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Sunday Night |
A chance of rain showers before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. South 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. |
| Monday |
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 85. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday Night |
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Tuesday |
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 60%. |
| Tuesday Night |
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%. |
| Wednesday |
Mostly sunny, with a high near 66. |
| Wednesday Night |
Partly cloudy, with a low around 43. |
| Thursday |
Mostly sunny, with a high near 67. |
| Thursday Night |
Partly cloudy, with a low around 46. |
Forecast from NOAA-NWS for Cottage Grove, WI.










