| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Jul-13-2026 12:31am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Clear, with a low around 67. West wind around 5 mph. |
| Monday |
Sunny, with a high near 92. Heat index values as high as 95. West wind around 5 mph. |
| Monday Night |
Mostly clear, with a low around 69. West wind around 5 mph. |
| Tuesday |
Sunny, with a high near 95. Heat index values as high as 97. Northwest wind around 5 mph. |
| Tuesday Night |
Mostly clear, with a low around 71. West wind around 5 mph. |
| Wednesday |
Sunny, with a high near 94. Northwest wind around 5 mph. |
| Wednesday Night |
Mostly clear, with a low around 70. North wind 0 to 5 mph. |
| Thursday |
Sunny, with a high near 90. West wind 0 to 5 mph. |
| Thursday Night |
Partly cloudy, with a low around 68. |
| Friday |
Mostly sunny, with a high near 89. |
| Friday Night |
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 68. Chance of precipitation is 20%. |
| Saturday |
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%. |
| Saturday Night |
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 66. Chance of precipitation is 20%. |
| Sunday |
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.