| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Sat, Jul-25-2026 2:36am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 61. South wind around 5 mph. |
| Saturday |
Partly sunny, with a high near 85. Southwest wind 5 to 10 mph. |
| Saturday Night |
Partly cloudy, with a low around 69. Southwest wind around 5 mph. |
| Sunday |
Partly sunny, with a high near 92. Heat index values as high as 101. Southwest wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible. |
| Sunday Night |
A slight chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday |
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 91. Southwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday Night |
Partly cloudy, with a low around 68. North wind 5 to 10 mph. |
| Tuesday |
Mostly sunny, with a high near 86. North wind around 5 mph. |
| Tuesday Night |
Mostly clear, with a low around 63. |
| Wednesday |
Sunny, with a high near 87. |
| Wednesday Night |
Mostly clear, with a low around 63. |
| Thursday |
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%. |
| Thursday Night |
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 20%. |
| Friday |
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Cottage Grove, WI.