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September Weather in Chester Gap, United States

Last updated: June 24, 2025

In September, the average temperature in Chester Gap, United States hovers around 21°C (69°F), offering a pleasant climate for visitors. Temperatures can swing between a cool 3°C (38°F) and a warm 35°C (94°F), so it's wise to come prepared. Be aware that precipitation is common, with an average of 108 mm (4.3 in) over about 10 days, and expect a comfortable average humidity level of 68%.

September Temperature in Chester Gap

In September in Chester Gap, the average temperature is 21°C (69°F). Maximum can reach 35°C (94°F) and minimum can be as low as 3°C (38°F). This makes Chester Gap a great destination for travelers looking to enjoy a variety of weather conditions, so pack accordingly!

September Weather in Chester Gap: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Chester Gap, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chester Gap, September typically has an average temperature of 21°C (69°F), with highs reaching up to 35°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec353945556472787569594539
Data source: Temperature data for Chester Gap 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 Chester Gap

In Chester Gap in September, the total precipitation amount is 108 mm (4.3 in) spread over a duration of 10 days.

September Precipitation Trends in Chester Gap

The chart displays monthly precipitation patterns in Chester Gap, 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 Chester Gap, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5990761051251211031321081038385
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chester Gap

In Chester Gap in September humidity is 68%. With average temperature 21°C (69°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated and take breaks in the shade while exploring the local sights.

September Average Humidity in Chester Gap

This chart illustrates the average monthly humidity levels in Chester Gap, 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 Chester Gap is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chester Gap

In Chester Gap in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Chester Gap.

Maximum UV Index Levels in Chester Gap for September

The chart shows the monthly maximum UV Index (UVI) for Chester Gap 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 Chester Gap typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710111010108753
Data source: Chester Gap 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 Chester Gap Compares to Other Months

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

This table compares monthly weather conditions in Chester Gap, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)59 mm (2.3 inches)86%moderate
February Weather4°C (40°F)90 mm (3.6 inches)86%moderate
March Weather7°C (45°F)76 mm (3.0 inches)86%high
April Weather13°C (55°F)105 mm (4.1 inches)84%very high
May Weather18°C (65°F)125 mm (4.9 inches)78%extreme
June Weather22°C (73°F)121 mm (4.8 inches)79%very high
July Weather25°C (78°F)103 mm (4.1 inches)70%very high
August Weather24°C (75°F)132 mm (5.2 inches)59%very high
September Weather21°C (69°F)108 mm (4.3 inches)68%very high
October Weather15°C (60°F)103 mm (4.1 inches)80%high
November Weather7°C (45°F)83 mm (3.3 inches)86%moderate
December Weather4°C (39°F)85 mm (3.4 inches)85%moderate

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