| National Weather Service Forecast for:
Cottage Grove, WI Issued by: National Weather Service Milwaukee/Sullivan/Dousman, WI |
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| Updated: Thu, Sep-10-2026 11:47pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Cottage Grove | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 55. South wind 0 to 5 mph. |
| Friday |
Sunny, with a high near 80. South wind 5 to 10 mph. |
| Friday Night |
Partly cloudy, with a low around 61. South wind 5 to 10 mph. |
| Saturday |
Mostly sunny, with a high near 81. Southwest wind around 10 mph. |
| Saturday Night |
Mostly clear, with a low around 54. Northwest wind around 5 mph. |
| Sunday |
A slight chance of rain showers after 1pm. Partly sunny. High near 73, with temperatures falling to around 67 in the afternoon. North wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Sunday Night |
A chance of rain showers. Partly cloudy, with a low around 53. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible. |
| Monday |
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 75. Southeast wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible. |
| Monday Night |
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 80%. |
| Tuesday |
Showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 80%. |
| Tuesday Night |
A chance of rain showers. Mostly cloudy, with a low around 54. Chance of precipitation is 30%. |
| Wednesday |
A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 30%. |
| Wednesday Night |
A chance of rain showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%. |
| Thursday |
A chance of rain showers. Partly sunny, with a high near 71. Chance of precipitation is 40%. |
Forecast from NOAA-NWS for Cottage Grove, WI.