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September Weather in Avon, United States

Last updated: June 24, 2025

In September, the average temperature in Avon, United States hovers around a pleasant 20°C (69°F). Expect temperatures to vary, with a minimum of 9°C (49°F) and a maximum reaching up to 31°C (88°F). During this month, you might encounter about 79 mm (3.1 in) of precipitation spread across 9 days, while the average humidity remains comfortably high at 77%.

September Temperature in Avon

In September in Avon, the average temperature is 20°C (69°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as 9°C (49°F). This favorable weather makes Avon an ideal destination for travelers seeking a pleasant climate.

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

The chart illustrates September temperature patterns in Avon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Avon, September typically has an average temperature of 20°C (69°F), with highs reaching up to 31°C (88°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec303238485970757468584336
Data source: Temperature data for Avon 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 Avon

In Avon in September, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

September Precipitation Trends in Avon

The chart displays monthly precipitation patterns in Avon, 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 Avon, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec80858611212211312488791079987
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Avon

In Avon in September, humidity is 77%. With an average temperature of 20°C (69°F), this humidity feels like a sultry embrace, making travel comfortable yet slightly sticky, as the moist air clings to your skin with every step you take.

September Average Humidity in Avon

This chart illustrates the average monthly humidity levels in Avon, 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 Avon is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Avon

In Avon 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 Avon.

Maximum UV Index Levels in Avon for September

The chart shows the monthly maximum UV Index (UVI) for Avon 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 Avon typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Avon 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 Avon Compares to Other Months

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

This table compares monthly weather conditions in Avon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)80 mm (3.2 inches)88%moderate
February Weather0°C (32°F)85 mm (3.4 inches)88%moderate
March Weather3°C (38°F)86 mm (3.4 inches)87%high
April Weather9°C (48°F)112 mm (4.4 inches)87%very high
May Weather15°C (60°F)122 mm (4.8 inches)81%very high
June Weather21°C (70°F)113 mm (4.4 inches)83%very high
July Weather24°C (76°F)124 mm (4.9 inches)82%very high
August Weather23°C (74°F)88 mm (3.5 inches)76%very high
September Weather20°C (69°F)79 mm (3.1 inches)77%very high
October Weather14°C (58°F)107 mm (4.2 inches)82%high
November Weather6°C (43°F)99 mm (3.9 inches)89%moderate
December Weather2°C (36°F)87 mm (3.4 inches)86%low

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