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September Weather in Virginia, United States

Last updated: June 24, 2025

In Virginia, United States, the average temperature in September hovers around 14°C (58°F). Expect a wide range, with lows dipping to -2°C (29°F) and highs reaching up to 30°C (86°F). During this month, precipitation averages at 117 mm (4.6 in) over approximately 13 days, contributing to an average humidity of 77%. Stay prepared for various weather conditions!

September Temperature in Virginia

In September in Virginia, the average temperature is 14°C (58°F). Maximum temperatures can reach 30°C (86°F), while the minimum can drop as low as -2°C (29°F). Travelers should be prepared for a wide range of weather conditions during this month.

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

The chart illustrates September temperature patterns in Virginia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Virginia, September typically has an average temperature of 14°C (58°F), with highs reaching up to 30°C (86°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec9926385464696557432716
Data source: Temperature data for Virginia 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 Virginia

In Virginia in September, the total precipitation amount is 117 mm (4.6 in) spread over 13 days.

September Precipitation Trends in Virginia

The chart displays monthly precipitation patterns in Virginia, 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 Virginia, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec22283259708110387117913953
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Virginia

In Virginia in September, humidity is 77%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making traveling feel sticky and heavy, yet still manageable as you explore the sights.

September Average Humidity in Virginia

This chart illustrates the average monthly humidity levels in Virginia, 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 Virginia is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Virginia

In Virginia 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 Virginia.

Maximum UV Index Levels in Virginia for September

The chart shows the monthly maximum UV Index (UVI) for Virginia 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 Virginia typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
Data source: Virginia 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 Virginia Compares to Other Months

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

This table compares monthly weather conditions in Virginia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (10°F)22 mm (0.9 inches)92%low
February Weather-13°C (10°F)28 mm (1.1 inches)93%moderate
March Weather-3°C (27°F)32 mm (1.3 inches)88%moderate
April Weather3°C (38°F)59 mm (2.3 inches)83%high
May Weather12°C (54°F)70 mm (2.8 inches)76%very high
June Weather18°C (65°F)81 mm (3.2 inches)76%very high
July Weather20°C (69°F)103 mm (4.1 inches)76%very high
August Weather18°C (65°F)87 mm (3.4 inches)77%very high
September Weather14°C (58°F)117 mm (4.6 inches)77%high
October Weather6°C (43°F)91 mm (3.6 inches)82%moderate
November Weather-3°C (27°F)39 mm (1.5 inches)87%moderate
December Weather-9°C (17°F)53 mm (2.1 inches)89%low

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