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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 18°C (65°F). Expect fluctuations with minimum temperatures dipping to 3°C (38°F) and soaring as high as 33°C (91°F). During this month, the area typically receives 69 mm (2.7 in) of precipitation over 8 days, accompanied by a notable average humidity level of 76%.

September Temperature in Avon

In September in Avon, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (38°F). This climate makes Avon a great destination for travelers seeking a mix of warm days and cool evenings.

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 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935465867737164543932
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 69 mm (2.7 in) that falls over a period of 8 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 69 mm (2.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec7579731111068113492691388584
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Avon

In Avon in September, humidity is 76%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making travel a little sticky but enjoyable, as long as you stay hydrated and take breaks in the shade.

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 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 Avon

In Avon 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 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24581010997532
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-3°C (27°F)75 mm (3.0 inches)91%low
February Weather-2°C (29°F)79 mm (3.1 inches)91%moderate
March Weather2°C (35°F)73 mm (2.9 inches)88%moderate
April Weather8°C (46°F)111 mm (4.4 inches)88%very high
May Weather15°C (58°F)106 mm (4.2 inches)82%very high
June Weather20°C (68°F)81 mm (3.2 inches)79%very high
July Weather23°C (73°F)134 mm (5.3 inches)77%very high
August Weather22°C (71°F)92 mm (3.6 inches)72%very high
September Weather18°C (65°F)69 mm (2.7 inches)76%high
October Weather12°C (54°F)137 mm (5.4 inches)83%moderate
November Weather4°C (40°F)85 mm (3.3 inches)88%moderate
December Weather0°C (32°F)84 mm (3.3 inches)87%low

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