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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 21°C (70°F). Expect temperatures to vary, with a minimum of 7°C (44°F) and a maximum reaching 35°C (95°F). During this month, precipitation totals around 106 mm (4.2 in) over approximately 9 days, accompanied by an average humidity of 68%.

September Temperature in Danville

In September, in Danville, the average temperature is 21°C (70°F). Maximums can reach 35°C (95°F) and minimums can be as low as 7°C (44°F). It's an ideal time to visit for those who enjoy mild weather but be prepared for both warm and cool conditions.

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 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec364247556571757369604641
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 total precipitation amount is 106 mm (4.2 in), spread over the course of 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 106 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10216612814016716112711510612480128
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 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.

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 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec35710101111109753
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 Weather2°C (36°F)102 mm (4.0 inches)87%moderate
February Weather5°C (42°F)166 mm (6.5 inches)87%moderate
March Weather8°C (47°F)128 mm (5.0 inches)86%high
April Weather13°C (56°F)140 mm (5.5 inches)84%very high
May Weather18°C (65°F)167 mm (6.6 inches)83%very high
June Weather22°C (71°F)161 mm (6.3 inches)83%extreme
July Weather24°C (76°F)127 mm (5.0 inches)79%extreme
August Weather23°C (74°F)115 mm (4.5 inches)66%very high
September Weather21°C (70°F)106 mm (4.2 inches)68%very high
October Weather15°C (60°F)124 mm (4.9 inches)78%high
November Weather8°C (46°F)80 mm (3.2 inches)89%moderate
December Weather5°C (41°F)127 mm (5.0 inches)86%moderate

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