Last updated: June 24, 2025
In September, the average temperature in Burlington, United States hovers around 15°C (59°F), with a diverse range from a chilly -2°C (29°F) to a warm 34°C (93°F). Expect about 66 mm (2.6 in) of precipitation over 7 days, and enjoy the moderate average humidity of 71% that adds a unique touch to the local climate.
In September in Burlington, the average temperature is 15°C (59°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -2°C (29°F). This variability in temperature makes it essential for travelers to pack a mix of warm and cool weather clothing to enjoy their visit comfortably.
In Burlington in September, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.
In Burlington in September humidity is 71%. With an average temperature of 15°C (59°F), this humidity feels like a damp embrace, making outdoor activities slightly uncomfortable and encouraging travelers to seek shade or indoor attractions to escape the muggy air.
In Burlington in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Burlington.
UV Risk Categories
Weather in Burlington varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Burlington, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (12°F) | 13 mm (0.5 inches) | 89% | low |
| February Weather | -13°C (10°F) | 16 mm (0.6 inches) | 91% | moderate |
| March Weather | -3°C (27°F) | 25 mm (1.0 inches) | 87% | moderate |
| April Weather | 3°C (38°F) | 28 mm (1.1 inches) | 78% | very high |
| May Weather | 12°C (55°F) | 34 mm (1.3 inches) | 73% | very high |
| June Weather | 19°C (67°F) | 74 mm (2.9 inches) | 71% | very high |
| July Weather | 22°C (71°F) | 65 mm (2.6 inches) | 76% | very high |
| August Weather | 20°C (68°F) | 58 mm (2.3 inches) | 77% | very high |
| September Weather | 15°C (59°F) | 66 mm (2.6 inches) | 71% | high |
| October Weather | 5°C (42°F) | 39 mm (1.5 inches) | 75% | moderate |
| November Weather | -2°C (28°F) | 25 mm (1.0 inches) | 84% | low |
| December Weather | -7°C (19°F) | 22 mm (0.9 inches) | 92% | low |