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September Weather in Avon, United States

Last updated: June 24, 2025

In September, the average temperature in Avon, United States is a warm 26°C (79°F), making it an inviting time to visit. However, temperatures can fluctuate, with a minimum of 13°C (56°F) and reaching a maximum of 38°C (100°F). Visitors should also prepare for 11 days of rainfall, accumulating about 111 mm (4.4 in), while average humidity sits at a noticeable 79%.

September Temperature in Avon

In September in Avon, the average temperature is 26°C (79°F). Maximums can reach 38°C (100°F) and minimums can be as low as 13°C (56°F). This variation means travelers should be prepared for both warm days and cooler nights.

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 26°C (79°F), with highs reaching up to 38°C (100°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec525862677579818179725954
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 111 mm (4.4 in), occurring over the course of 11 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 111 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec94113821111031151161441118547135
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 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
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 Weather11°C (52°F)94 mm (3.7 inches)83%moderate
February Weather14°C (58°F)113 mm (4.5 inches)82%very high
March Weather17°C (62°F)82 mm (3.2 inches)79%very high
April Weather19°C (67°F)111 mm (4.4 inches)77%extreme
May Weather24°C (75°F)103 mm (4.1 inches)74%extreme
June Weather26°C (80°F)115 mm (4.5 inches)70%extreme
July Weather27°C (82°F)116 mm (4.6 inches)78%extreme
August Weather27°C (82°F)144 mm (5.7 inches)78%extreme
September Weather26°C (79°F)111 mm (4.4 inches)79%very high
October Weather22°C (72°F)85 mm (3.3 inches)74%very high
November Weather15°C (59°F)47 mm (1.8 inches)83%high
December Weather12°C (55°F)135 mm (5.3 inches)86%moderate

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