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September Weather in Danville, United States

Last updated: June 24, 2025

In September, the average temperature in Danville, United States is a pleasant 24°C (76°F). Expect a range from a cool 9°C (48°F) to a warm 37°C (99°F). While you enjoy the mild weather, be prepared for 60 mm (2.3 in) of precipitation over 6 days and an average humidity of 59%.

September Temperature in Danville

In September in Danville, the average temperature is 24°C (76°F). The maximum can reach 37°C (99°F), while the minimum can drop as low as 9°C (48°F). This makes Danville an ideal destination for travelers seeking warm weather but also a good mix of cooler evenings.

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

The chart illustrates September temperature patterns in Danville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Danville, September typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec414455607078817976635146
Data source: Temperature data for Danville 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 Danville

In Danville, in September, the precipitation amount is 60 mm (2.3 in) over a span of 6 days.

September Precipitation Trends in Danville

The chart displays monthly precipitation patterns in Danville, 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 Danville, September typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec8313513115018212010112960897496
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Danville

In Danville in September humidity is 59%. With an average temperature of 24°C (76°F), this humidity feels like a comfortable, refreshing embrace, making it ideal for leisurely strolls and outdoor explorations.

September Average Humidity in Danville

This chart illustrates the average monthly humidity levels in Danville, 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 Danville is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Danville

In Danville in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Danville.

Maximum UV Index Levels in Danville for September

The chart shows the monthly maximum UV Index (UVI) for Danville 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 Danville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Danville 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 Danville Compares to Other Months

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

This table compares monthly weather conditions in Danville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)83 mm (3.3 inches)82%moderate
February Weather7°C (45°F)135 mm (5.3 inches)79%high
March Weather13°C (55°F)131 mm (5.1 inches)77%very high
April Weather16°C (60°F)150 mm (5.9 inches)78%very high
May Weather21°C (70°F)182 mm (7.2 inches)82%extreme
June Weather26°C (78°F)120 mm (4.7 inches)81%extreme
July Weather27°C (81°F)101 mm (4.0 inches)75%extreme
August Weather26°C (79°F)129 mm (5.1 inches)61%very high
September Weather24°C (76°F)60 mm (2.3 inches)59%very high
October Weather17°C (64°F)89 mm (3.5 inches)69%high
November Weather10°C (51°F)74 mm (2.9 inches)82%moderate
December Weather8°C (47°F)96 mm (3.8 inches)87%moderate

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