Last updated: June 24, 2025
In Vermont, United States, the average temperature in September hovers around 21°C (70°F), making it a pleasant time to visit. Expect temperatures to fluctuate between a minimum of 6°C (43°F) and a maximum of 35°C (94°F). During this month, 77 mm (3.0 in) of precipitation is anticipated over approximately 7 days, contributing to an average humidity of 78%.
In September in Vermont, the average temperature is 21°C (70°F). Maximums can reach 35°C (94°F), while minimums can drop as low as 6°C (43°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!
In Vermont in September, the precipitation amount is 77 mm (3.0 in) over the course of 7 days.
In Vermont in September, humidity is 78%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it important to stay hydrated and take frequent breaks from outdoor activities.
In Vermont in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Vermont.
UV Risk Categories
Weather in Vermont varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vermont, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -2°C (28°F) | 61 mm (2.4 inches) | 81% | moderate |
February Weather | -1°C (31°F) | 67 mm (2.6 inches) | 81% | moderate |
March Weather | 6°C (43°F) | 125 mm (4.9 inches) | 81% | high |
April Weather | 11°C (52°F) | 104 mm (4.1 inches) | 82% | very high |
May Weather | 18°C (65°F) | 166 mm (6.5 inches) | 78% | very high |
June Weather | 24°C (75°F) | 132 mm (5.2 inches) | 81% | extreme |
July Weather | 25°C (78°F) | 97 mm (3.8 inches) | 79% | very high |
August Weather | 24°C (75°F) | 91 mm (3.6 inches) | 77% | very high |
September Weather | 21°C (70°F) | 77 mm (3.0 inches) | 78% | very high |
October Weather | 13°C (56°F) | 107 mm (4.2 inches) | 78% | high |
November Weather | 5°C (41°F) | 58 mm (2.3 inches) | 87% | moderate |
December Weather | 2°C (35°F) | 49 mm (1.9 inches) | 84% | low |