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October Weather in Chester, United States

Last updated: June 24, 2025

In Chester, United States, the average temperature for October hovers around 19°C (67°F), with extremes ranging from a chilly 1°C (34°F) to a scorching 37°C (98°F). Expect about 88 mm (3.5 in) of precipitation spread over 9 days, and be prepared for a notably high average humidity of 79%.

October Temperature in Chester

In October in Chester, the average temperature is 19°C (67°F), with maximums reaching 37°C (98°F) and minimums dropping as low as 1°C (34°F). This varied climate makes Chester an ideal destination for travelers seeking both warm days and cooler evenings.

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 19°C (67°F), with highs reaching up to 37°C (98°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec465155637277817975675348
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 88 mm (3.5 in) over the course of 9 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 88 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9412588102110891091241108894130
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 79%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit more challenging, as the air is thick and can leave you feeling sluggish during outdoor adventures.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
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 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.

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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109863
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 Weather8°C (46°F)94 mm (3.7 inches)86%moderate
February Weather10°C (51°F)124 mm (4.9 inches)85%high
March Weather13°C (56°F)88 mm (3.5 inches)84%very high
April Weather17°C (63°F)102 mm (4.0 inches)82%very high
May Weather22°C (72°F)110 mm (4.3 inches)83%very high
June Weather25°C (78°F)89 mm (3.5 inches)82%extreme
July Weather27°C (81°F)109 mm (4.3 inches)80%extreme
August Weather26°C (79°F)124 mm (4.9 inches)74%very high
September Weather24°C (76°F)110 mm (4.3 inches)75%very high
October Weather19°C (67°F)88 mm (3.5 inches)79%very high
November Weather11°C (53°F)94 mm (3.7 inches)87%high
December Weather9°C (49°F)130 mm (5.1 inches)87%moderate

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