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August Weather in Chester, United States

Last updated: June 24, 2025

In August, the average temperature in Chester, United States is a pleasant 25°C (77°F). However, temperatures can range from a cool 13°C (55°F) to a scorching 37°C (98°F). Expect some rainfall too, with an average precipitation of 103 mm (4.1 in) spread over 11 days. The air will feel quite humid, with an average humidity of 76%, making for a warm and muggy atmosphere.

August Temperature in Chester

In August in Chester, the average temperature is 25°C (77°F). Maximums can reach 37°C (98°F) and minimums can be as low as 13°C (55°F). Be prepared for warm days and cooler nights, making it a great time for travelers to explore outdoor activities while enjoying the mild evenings.

August Weather in Chester: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Chester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chester, August typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (98°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748566877807773604541
Data source: Temperature data for Chester 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.

August Precipitation in Chester

In Chester in August, the precipitation amount is 103 mm (4.1 in) spread over 11 days.

August Precipitation Trends in Chester

The chart displays monthly precipitation patterns in Chester, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Chester, August typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec881081361441588788103641258477
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Chester

In Chester in August, humidity is 76%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel muggy and requiring frequent breaks to stay refreshed.

August Average Humidity in Chester

This chart illustrates the average monthly humidity levels in Chester, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Chester is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Chester

In Chester in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chester.

Maximum UV Index Levels in Chester for August

The chart shows the monthly maximum UV Index (UVI) for Chester in August, 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 August, the maximum UV index in Chester typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579111110109753
Data source: Chester August 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 August Weather in Chester Compares to Other Months

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

This table compares monthly weather conditions in Chester, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)88 mm (3.5 inches)86%moderate
February Weather3°C (38°F)108 mm (4.2 inches)84%moderate
March Weather9°C (48°F)136 mm (5.3 inches)84%high
April Weather13°C (56°F)144 mm (5.7 inches)80%very high
May Weather20°C (68°F)157 mm (6.2 inches)82%extreme
June Weather25°C (77°F)87 mm (3.4 inches)83%extreme
July Weather27°C (80°F)88 mm (3.5 inches)79%very high
August Weather25°C (77°F)103 mm (4.1 inches)76%very high
September Weather23°C (73°F)64 mm (2.5 inches)75%very high
October Weather16°C (60°F)125 mm (4.9 inches)74%high
November Weather7°C (45°F)84 mm (3.3 inches)85%moderate
December Weather5°C (41°F)77 mm (3.0 inches)88%moderate

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