nomadseason

September Weather in Danville, United States

Last updated: June 24, 2025

In September, the average temperature in Danville, United States hovers around 23°C (73°F). However, be prepared for fluctuations: temperatures can dip to a chilly 7°C (44°F) or soar as high as 37°C (99°F). The region experiences an average precipitation of 109 mm (4.3 in) over approximately 9 days, contributing to a 75% humidity level that adds to the atmosphere.

September Temperature in Danville

In September in Danville, the average temperature is 23°C (73°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 7°C (44°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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 23°C (73°F), with highs reaching up to 37°C (99°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec414651606975807873634945
Data source: Temperature data for Danville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Danville

In Danville in September, the total precipitation amount is 109 mm (4.3 in) spread over 9 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 109 mm (4.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec761107612111692761081091087698
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Danville

In Danville in September, humidity is 75%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel slightly uncomfortable yet invigorating as the air wraps around you, creating a sense of walking through a lush, tropical paradise.

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 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%84%82%83%83%79%77%75%81%87%85%
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.
JanFebMarAprMayJunJulAugSepOctNovDec4689101110109853
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)76 mm (3.0 inches)84%moderate
February Weather8°C (46°F)110 mm (4.3 inches)84%high
March Weather11°C (51°F)76 mm (3.0 inches)84%very high
April Weather16°C (60°F)121 mm (4.8 inches)82%very high
May Weather20°C (69°F)115 mm (4.5 inches)82%very high
June Weather24°C (76°F)92 mm (3.6 inches)83%extreme
July Weather27°C (81°F)76 mm (3.0 inches)79%very high
August Weather26°C (78°F)108 mm (4.2 inches)77%very high
September Weather23°C (73°F)109 mm (4.3 inches)75%very high
October Weather17°C (64°F)108 mm (4.3 inches)81%very high
November Weather10°C (49°F)76 mm (3.0 inches)87%moderate
December Weather7°C (45°F)98 mm (3.9 inches)85%moderate

Compare Danville's Climate with Cities Worldwide