| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Aug-31-2026 1:35pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
Showers and thunderstorms likely. Partly sunny, with a high near 88. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
A slight chance of showers and thunderstorms before 8pm, then patchy fog. Mostly cloudy, with a low around 70. Southwest wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
Patchy fog before 9am. Partly sunny, with a high near 90. Heat index values as high as 96. West wind 0 to 5 mph. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
Partly cloudy, with a low around 71. Southwest wind 0 to 5 mph. |
| Wednesday |
Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. |
| Wednesday Night |
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. West wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday |
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 85. Southeast wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Thursday Night |
A slight chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Partly cloudy, with a low around 68. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible. |
| Friday |
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 60%. |
| Friday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 40%. |
| Saturday |
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 40%. |
| Saturday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 20%. |
| Sunday |
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 20%. |
| Sunday Night |
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.





