The temperatures in Vermont in September are comfortable with low of 18°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Vermont during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Vermont in September 2025.
If you’re planning to visit Vermont in the near future, we highly recommend that you review the 14 day weather forecast for Vermont before you arrive.