| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Fri, Jul-31-2026 1:21am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Mostly cloudy, with a low around 62. South wind 0 to 5 mph. |
| Friday |
A chance of rain showers between 10am and 1pm, then showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 71 in the afternoon. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
| Friday Night |
Showers and thunderstorms. Cloudy, with a low around 63. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible. |
| Saturday |
Rain showers before 5pm. Cloudy, with a high near 74. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible. |
| Saturday Night |
Mostly cloudy, with a low around 61. Northeast wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible. |
| Sunday |
Mostly sunny, with a high near 78. North wind around 10 mph. |
| Sunday Night |
Mostly clear, with a low around 54. Northeast wind 0 to 5 mph. |
| Monday |
Sunny, with a high near 81. East wind 0 to 5 mph. |
| Monday Night |
Mostly clear, with a low around 58. |
| Tuesday |
Sunny, with a high near 85. |
| Tuesday Night |
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 20%. |
| Wednesday |
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%. |
| Wednesday Night |
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 20%. |
| Thursday |
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%. |
Forecast from NOAA-NWS for Cottage Grove, WI.