October Weather in Chester, United States

Last updated: June 24, 2025

In October, the average temperature in Chester, United States hovers around 9°C (49°F), with a range that can dip to a brisk -5°C (24°F) and rise to a warm 29°C (85°F). Expect 53 mm (2.1 in) of precipitation over 4 days, contributing to an average humidity of 67%. Whether you're seeking a chilly retreat or a mild escape, Chester offers a diverse climate this season.

October Temperature in Chester

In October in Chester, the average temperature is 9°C (49°F). Maximums can reach 29°C (85°F), while minimums can dip as low as -5°C (24°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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 9°C (49°F), with highs reaching up to 29°C (85°F) and lows dropping to around -5°C (24°F).

Data source: Temperature data for Chester generated using information from the Copernicus Climate Change Service.

October Precipitation in Chester

In Chester in October, the total precipitation amount is 53 mm (2.1 in) over a span of 4 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 53 mm (2.1 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Chester

In Chester in October, humidity is 67%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to bundle up if you're planning to explore the area.

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 67%, offering insight into how humid the weather typically is during this month.

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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, 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 7, which falls under the high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	217 mm (8.5 inches)	86%	moderate
February Weather	0°C (32°F)	232 mm (9.1 inches)	87%	moderate
March Weather	2°C (35°F)	198 mm (7.8 inches)	86%	very high
April Weather	5°C (42°F)	100 mm (3.9 inches)	83%	very high
May Weather	11°C (52°F)	75 mm (3.0 inches)	72%	extreme
June Weather	17°C (63°F)	22 mm (0.9 inches)	67%	extreme
July Weather	22°C (71°F)	9 mm (0.3 inches)	56%	extreme
August Weather	21°C (69°F)	16 mm (0.6 inches)	42%	extreme
September Weather	16°C (61°F)	27 mm (1.1 inches)	46%	very high
October Weather	9°C (49°F)	53 mm (2.1 inches)	67%	high
November Weather	4°C (39°F)	106 mm (4.2 inches)	86%	moderate
December Weather	-1°C (31°F)	171 mm (6.7 inches)	86%	moderate