| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Jun-29-2026 2:37am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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Extreme Heat Warning issued June 28 at 9:15PM CDT until June 30 at 7:00PM CDT
| Overnight |
Mostly cloudy, with a low around 71. South wind around 10 mph. |
| Monday |
Mostly sunny, with a high near 93. Heat index values as high as 105. South wind 10 to 15 mph, with gusts as high as 30 mph. |
| Monday Night |
Mostly clear, with a low around 75. Heat index values as high as 101. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. |
| Tuesday |
Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind 10 to 15 mph. |
| Tuesday Night |
Mostly clear, with a low around 75. Southwest wind 10 to 15 mph. |
| Wednesday |
Sunny, with a high near 93. Southwest wind 10 to 15 mph. |
| Wednesday Night |
Mostly clear, with a low around 75. Southwest wind around 10 mph. |
| Thursday |
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 10 to 15 mph. Chance of precipitation is 20%. |
| Thursday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 50%. |
| Friday |
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%. |
| Friday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 50%. |
| Independence Day |
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%. |
| Saturday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 50%. |
| Sunday |
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%. |
Forecast from NOAA-NWS for Cottage Grove, WI.