| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sat, Aug-15-2026 8:41am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Today |
Isolated rain showers before 10am. Mostly cloudy, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Tonight |
A chance of showers and thunderstorms between 11pm and 4am, then a chance of showers and thunderstorms between 4am and 5am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Sunday |
A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 83. Northwest wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Sunday Night |
Mostly clear, with a low around 61. Northwest wind 0 to 10 mph. |
| Monday |
Sunny, with a high near 80. Northwest wind 0 to 5 mph. |
| Monday Night |
Mostly clear, with a low around 61. Southwest wind 0 to 5 mph. |
| Tuesday |
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Tuesday Night |
Showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
| Wednesday |
Showers and thunderstorms before 1pm. Partly sunny, with a high near 76. Chance of precipitation is 80%. |
| Wednesday Night |
Partly cloudy, with a low around 55. |
| Thursday |
Mostly sunny, with a high near 73. |
| Thursday Night |
Partly cloudy, with a low around 55. |
| Friday |
A slight chance of rain showers after 7am. Mostly sunny, with a high near 75. Chance of precipitation is 20%. |
| Friday Night |
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 57. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.