| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Wed, Aug-19-2026 1:21pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| This Afternoon |
Mostly sunny, with a high near 78. North wind around 5 mph. |
| Tonight |
Patchy fog after 2am. Partly cloudy, with a low around 55. Northeast wind 0 to 5 mph. |
| Thursday |
Patchy fog before 8am. Sunny, with a high near 81. Southwest wind 0 to 5 mph. |
| Thursday Night |
A chance of rain showers between 3am 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 61. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Friday |
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Friday Night |
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
| Saturday |
Sunny, with a high near 80. Northwest wind 5 to 10 mph. |
| Saturday Night |
Mostly clear, with a low around 57. Northwest wind 5 to 10 mph. |
| Sunday |
Sunny, with a high near 77. |
| Sunday Night |
Partly cloudy, with a low around 55. |
| Monday |
Mostly sunny, with a high near 78. |
| Monday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 59. Chance of precipitation is 20%. |
| Tuesday |
A slight chance of rain showers before 7am. Mostly sunny, with a high near 81. Chance of precipitation is 20%. |
| Tuesday Night |
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 62. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.





