| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Mon, Sep-28-2026 7:01am CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Today |
Patchy fog before 10am. Sunny, with a high near 74. Northeast wind around 0 mph. |
| Tonight |
Mostly clear, with a low around 50. Southeast wind around 0 mph. |
| Tuesday |
Partly sunny, with a high near 73. South wind 0 to 10 mph. |
| Tuesday Night |
A chance of rain showers after 1am. Mostly cloudy, with a low around 59. South wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Wednesday |
Rain showers likely before 4pm, then showers and thunderstorms likely. Cloudy, with a high near 70. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible. |
| Wednesday Night |
Showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible. |
| Thursday |
Showers and thunderstorms. Cloudy, with a high near 68. West wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible. |
| Thursday Night |
A chance of rain showers before 7pm. Mostly cloudy, with a low around 48. North wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible. |
| Friday |
Mostly sunny, with a high near 64. |
| Friday Night |
Partly cloudy, with a low around 44. |
| Saturday |
Mostly sunny, with a high near 65. |
| Saturday Night |
Partly cloudy, with a low around 48. |
| Sunday |
Mostly sunny, with a high near 63. |
| Sunday Night |
Partly cloudy, with a low around 45. |
Forecast from NOAA-NWS for Cottage Grove, WI.