| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Thu, Aug-27-2026 2:41am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Clear, with a low around 62. Northwest wind 0 to 5 mph. |
| Thursday |
Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph. |
| Thursday Night |
Mostly clear, with a low around 57. Southwest wind 0 to 5 mph. |
| Friday |
Sunny, with a high near 82. Southwest wind 0 to 5 mph. |
| Friday Night |
Partly cloudy, with a low around 61. Southwest wind 0 to 5 mph. |
| Saturday |
A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 79. South wind 5 to 10 mph. Chance of precipitation is 20%. |
| Saturday Night |
A slight chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday |
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Sunday Night |
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%. |
| Monday |
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%. |
| Monday Night |
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 69. Chance of precipitation is 40%. |
| Tuesday |
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 40%. |
| Tuesday Night |
A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%. |
| Wednesday |
A chance of showers and thunderstorms 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 30%. |
Forecast from NOAA-NWS for Cottage Grove, WI.