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September Weather in Lyndonville, United States

Last updated: June 24, 2025

In Lyndonville, United States, the average temperature in September hovers around 19°C (66°F). Expect a range from a brisk 7°C (45°F) to a warm 30°C (87°F). You'll experience approximately 73 mm (2.9 in) of precipitation over 9 days, with an average humidity of 76%. Perfect for those who enjoy a mild climate with a hint of rain!

September Temperature in Lyndonville

In September in Lyndonville, the average temperature is 19°C (66°F). Maximums can reach 30°C (87°F), while minimums can drop to as low as 7°C (45°F). This makes Lyndonville an ideal destination for travelers seeking comfortable weather and a pleasant getaway.

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

The chart illustrates September temperature patterns in Lyndonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyndonville, September typically has an average temperature of 19°C (66°F), with highs reaching up to 30°C (87°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec283035435464727265554134
Data source: Temperature data for Lyndonville 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 Lyndonville

In Lyndonville in September, the precipitation amount is 73 mm (2.9 in), occurring over the course of 9 days.

September Precipitation Trends in Lyndonville

The chart displays monthly precipitation patterns in Lyndonville, 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 Lyndonville, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec818870120988212785731359393
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lyndonville

In Lyndonville in September, humidity is 76%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making travel mildly uncomfortable and encouraging frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Lyndonville

This chart illustrates the average monthly humidity levels in Lyndonville, 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 Lyndonville is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lyndonville

In Lyndonville 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 Lyndonville.

Maximum UV Index Levels in Lyndonville for September

The chart shows the monthly maximum UV Index (UVI) for Lyndonville 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 Lyndonville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997532
Data source: Lyndonville 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 Lyndonville Compares to Other Months

Weather in Lyndonville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lyndonville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lyndonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)81 mm (3.2 inches)91%moderate
February Weather-1°C (30°F)88 mm (3.4 inches)91%moderate
March Weather2°C (35°F)70 mm (2.8 inches)88%high
April Weather6°C (44°F)120 mm (4.7 inches)88%very high
May Weather12°C (54°F)98 mm (3.9 inches)82%very high
June Weather18°C (64°F)82 mm (3.2 inches)79%very high
July Weather22°C (72°F)127 mm (5.0 inches)77%very high
August Weather22°C (72°F)85 mm (3.3 inches)72%very high
September Weather19°C (66°F)73 mm (2.9 inches)76%high
October Weather13°C (55°F)135 mm (5.3 inches)83%moderate
November Weather5°C (41°F)93 mm (3.6 inches)88%moderate
December Weather1°C (34°F)93 mm (3.7 inches)87%low

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