| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, Aug-21-2026 4:33pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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Severe Thunderstorm Watch issued August 21 at 4:00PM CDT until August 21 at 10:00PM CDT
Severe Thunderstorm Watch issued August 21 at 2:57PM CDT until August 21 at 10:00PM CDT
| This Afternoon |
Showers and thunderstorms likely after 5pm. Some of the storms could be severe. Mostly cloudy. High near 80, with temperatures falling to around 74 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Tonight |
Showers and thunderstorms likely before 10pm. Some of the storms could be severe. Partly cloudy, with a low around 60. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday |
Sunny, with a high near 78. Northwest wind 5 to 15 mph. |
| Saturday Night |
Mostly clear, with a low around 54. Northwest wind 5 to 10 mph. |
| Sunday |
Sunny, with a high near 76. Northwest wind 5 to 10 mph. |
| Sunday Night |
Mostly clear, with a low around 54. North wind 0 to 5 mph. |
| Monday |
Mostly sunny, with a high near 77. North wind around 0 mph. |
| Monday Night |
Partly cloudy, with a low around 58. Southeast wind around 0 mph. |
| Tuesday |
Mostly sunny, with a high near 80. |
| Tuesday Night |
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 63. Chance of precipitation is 30%. |
| Wednesday |
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 30%. |
| Wednesday Night |
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 61. Chance of precipitation is 20%. |
| Thursday |
Sunny, with a high near 81. |
| Thursday Night |
Mostly clear, with a low around 60. |
Forecast from NOAA-NWS for Cottage Grove, WI.