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October Weather in Chester, United States

Last updated: June 24, 2025

In October, the average temperature in Chester, United States hovers around 6°C (42°F). While you can expect a minimum dip to -20°C (-4°F), the mercury can also rise to a pleasant 30°C (86°F) at times. With an average precipitation of 20 mm (0.8 in) over about 5 days, and humidity levels around 72%, this month offers a mix of chilly and warm days, perfect for layering your outfits!

October Temperature in Chester

In October, in Chester, the average temperature is 6°C (42°F). The maximum can reach 30°C (86°F), while the minimum can drop as low as -20°C (-4°F). This wide temperature range makes Chester an ideal destination for travelers looking to experience a variety of weather conditions.

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

The chart illustrates October 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, October typically has an average temperature of 6°C (42°F), with highs reaching up to 30°C (86°F) and lows dropping to around -20°C (-4°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.

October Precipitation in Chester

In Chester in October, the precipitation amount is 20 mm (0.8 in) over a period of 5 days.

October Precipitation Trends in Chester

The chart displays monthly precipitation patterns in Chester, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Chester, October typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec133318375749102528202820
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Chester

In Chester in October, humidity is 72%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill wrapping around you, making outdoor exploration uncomfortable and prompting the need for layered clothing to stay warm while not letting the moisture in the air seep in too much.

October Average Humidity in Chester

This chart illustrates the average monthly humidity levels in Chester, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Chester is approximately 72%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Chester

In Chester in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Chester.

Maximum UV Index Levels in Chester for October

The chart shows the monthly maximum UV Index (UVI) for Chester in October, 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 October, the maximum UV index in Chester typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
Data source: Chester October 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 October 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 October’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 October’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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