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September Weather in Biltmore Forest, United States

Last updated: June 24, 2025

In September, the average temperature in Biltmore Forest, United States hovers around 20°C (68°F), making for pleasant weather. However, be prepared for variability, as temperatures can drop to a cool 5°C (41°F) or soar to a warm 32°C (89°F). Expect about 125 mm (4.9 in) of precipitation spread over 10 days, and don't forget your umbrella, as the average humidity is a high 76%. Enjoy your stay!

September Temperature in Biltmore Forest

In September in Biltmore Forest, the average temperature is 20°C (68°F). Maximums can reach 32°C (89°F) and minimums can be as low as 5°C (41°F). This range makes Biltmore Forest a comfortable destination for travelers seeking both warm days and cooler evenings.

September Weather in Biltmore Forest: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Biltmore Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Biltmore Forest, September typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (89°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec384348556469737168594541
Data source: Temperature data for Biltmore Forest 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 Biltmore Forest

In Biltmore Forest in September, the precipitation amount is 125 mm (4.9 in) spread over a period of 10 days.

September Precipitation Trends in Biltmore Forest

The chart displays monthly precipitation patterns in Biltmore Forest, 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 Biltmore Forest, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec80119101119117899312612513973109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Biltmore Forest

In Biltmore Forest in September, humidity is 76%. With an average temperature of 20°C (68°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration both exhilarating and slightly stifling, ideal for leisurely strolls but necessitating frequent breaks to hydrate and cool off.

September Average Humidity in Biltmore Forest

This chart illustrates the average monthly humidity levels in Biltmore Forest, 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 Biltmore Forest is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Biltmore Forest

In Biltmore Forest 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 Biltmore Forest.

Maximum UV Index Levels in Biltmore Forest for September

The chart shows the monthly maximum UV Index (UVI) for Biltmore Forest 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 Biltmore Forest typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111111010864
Data source: Biltmore Forest 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 Biltmore Forest Compares to Other Months

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

This table compares monthly weather conditions in Biltmore Forest, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)80 mm (3.2 inches)86%moderate
February Weather6°C (44°F)119 mm (4.7 inches)86%high
March Weather9°C (48°F)101 mm (4.0 inches)86%very high
April Weather13°C (56°F)119 mm (4.7 inches)82%extreme
May Weather18°C (64°F)117 mm (4.6 inches)85%extreme
June Weather21°C (70°F)89 mm (3.5 inches)85%extreme
July Weather23°C (73°F)93 mm (3.7 inches)83%extreme
August Weather22°C (72°F)126 mm (5.0 inches)76%very high
September Weather20°C (68°F)125 mm (4.9 inches)76%very high
October Weather15°C (59°F)139 mm (5.5 inches)80%very high
November Weather7°C (46°F)73 mm (2.9 inches)88%high
December Weather5°C (41°F)109 mm (4.3 inches)88%moderate

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