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August Weather in Chester, United States

Last updated: June 24, 2025

In August, the average temperature in Chester, United States hovers around 20°C (69°F). However, you can expect temperature variations, with minimums dipping to 3°C (38°F) and soaring to a sizzling 40°C (105°F). During this month, the region receives an average of 25 mm (1.0 in) of precipitation over the course of 4 days, while the average humidity maintains a comfortable level at 69%.

August Temperature in Chester

In August in Chester, the average temperature is 20°C (69°F). Maximum temperatures can reach up to 40°C (105°F), while minimum temperatures can drop as low as 3°C (38°F). Travelers should pack for both warm days and cool nights to fully enjoy their stay.

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 20°C (69°F), with highs reaching up to 40°C (105°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec211530415464726958423224
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 25 mm (1.0 in) over the course of 4 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 25 mm (1.0 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec133318375749102528202820
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 69%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping embrace, making travel feel both refreshing and slightly sticky, as you navigate the vibrant atmosphere with a pleasant sheen of perspiration glistening on your skin.

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 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%89%83%76%73%75%75%70%67%72%82%89%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
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 Weather-6°C (21°F)13 mm (0.5 inches)86%low
February Weather-9°C (15°F)33 mm (1.3 inches)89%moderate
March Weather-1°C (30°F)18 mm (0.7 inches)83%moderate
April Weather5°C (41°F)37 mm (1.4 inches)75%high
May Weather12°C (54°F)57 mm (2.2 inches)72%very high
June Weather18°C (64°F)48 mm (1.9 inches)75%very high
July Weather22°C (72°F)10 mm (0.4 inches)75%very high
August Weather20°C (69°F)25 mm (1.0 inches)69%very high
September Weather14°C (58°F)28 mm (1.1 inches)66%high
October Weather6°C (42°F)20 mm (0.8 inches)72%moderate
November Weather0°C (32°F)28 mm (1.1 inches)82%moderate
December Weather-5°C (24°F)20 mm (0.8 inches)89%low

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