| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Thu, Sep-03-2026 2:41am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
A slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 71. South wind around 0 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Thursday |
A chance of showers and thunderstorms before 4pm. Partly sunny, with a high near 87. Southwest wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Thursday Night |
A chance of showers and thunderstorms between 8pm and 11pm, then showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible. |
| Friday |
Showers and thunderstorms likely before 9am, then a slight chance of showers and thunderstorms between 9am and 10am. Mostly sunny, with a high near 88. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 83. Northeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday Night |
Partly cloudy, with a low around 63. East wind 0 to 5 mph. |
| Sunday |
Mostly sunny, with a high near 82. East wind 0 to 5 mph. |
| Sunday Night |
Partly cloudy, with a low around 62. |
| Labor Day |
Mostly sunny, with a high near 81. |
| Monday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 20%. |
| Tuesday |
A chance of rain showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%. |
| Tuesday Night |
A slight chance of rain showers before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 50%. |
| Wednesday |
A 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.