| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, Sep-04-2026 7:33am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Today |
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Heat index values as high as 98. Southwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then a slight chance of showers and thunderstorms between midnight and 1am, then patchy fog. Partly cloudy, with a low around 69. West wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Saturday |
Patchy fog before 9am. Partly sunny, with a high near 84. Northeast wind 0 to 5 mph. |
| Saturday Night |
Partly cloudy, with a low around 62. Northeast wind 0 to 5 mph. |
| Sunday |
Mostly sunny, with a high near 81. East wind 0 to 5 mph. |
| Sunday Night |
Mostly cloudy, with a low around 60. East wind 0 to 5 mph. |
| Labor Day |
Mostly sunny, with a high near 81. Southeast wind 0 to 5 mph. |
| Monday Night |
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 63. Southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday |
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 30%. |
| Tuesday Night |
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%. |
| Wednesday |
Showers and thunderstorms likely before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 85. Chance of precipitation is 60%. |
| Wednesday Night |
A chance of rain showers after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%. |
| Thursday |
A chance of rain showers before 1pm. Partly sunny, with a high near 79. Chance of precipitation is 30%. |
| Thursday Night |
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 58. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.