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September Weather in Burlington, United States

Last updated: June 24, 2025

In Burlington, United States, the average temperature in September is a pleasant 21°C (70°F). However, be prepared for a range of temperatures, with minimums dipping to 1°C (34°F) and maximums soaring to 39°C (102°F). Expect a total precipitation of 37 mm (1.5 in) spread over approximately 4 days, and keep in mind that the average humidity is a high 82%.

September Temperature in Burlington

In September in Burlington, the average temperature is 21°C (70°F). The maximum can reach 39°C (102°F), while the minimum can drop as low as 1°C (34°F). It's advisable to prepare for a wide range of temperatures when traveling during this month.

September Weather in Burlington: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Burlington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Burlington, September typically has an average temperature of 21°C (70°F), with highs reaching up to 39°C (102°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec333244516073777469524436
Data source: Temperature data for Burlington generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Burlington

In Burlington in September, the precipitation amount is 37 mm (1.5 in) over the course of 4 days.

September Precipitation Trends in Burlington

The chart displays monthly precipitation patterns in Burlington, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Burlington, September typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec161550368254584337311312
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Burlington

In Burlington in September, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

September Average Humidity in Burlington

This chart illustrates the average monthly humidity levels in Burlington, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Burlington is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%78%66%66%83%83%83%86%82%75%77%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Burlington

In Burlington in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Burlington.

Maximum UV Index Levels in Burlington for September

The chart shows the monthly maximum UV Index (UVI) for Burlington in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Burlington typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45710111211119743
Data source: Burlington September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Burlington Compares to Other Months

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.

This table compares monthly weather conditions in Burlington, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)16 mm (0.6 inches)74%moderate
February Weather0°C (32°F)15 mm (0.6 inches)78%moderate
March Weather7°C (44°F)50 mm (2.0 inches)66%high
April Weather10°C (51°F)36 mm (1.4 inches)66%very high
May Weather16°C (60°F)82 mm (3.2 inches)83%extreme
June Weather23°C (74°F)54 mm (2.1 inches)83%extreme
July Weather25°C (77°F)58 mm (2.3 inches)83%extreme
August Weather23°C (74°F)43 mm (1.7 inches)86%extreme
September Weather21°C (70°F)37 mm (1.5 inches)82%very high
October Weather11°C (52°F)31 mm (1.2 inches)75%high
November Weather7°C (44°F)13 mm (0.5 inches)77%moderate
December Weather2°C (36°F)12 mm (0.5 inches)82%moderate

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