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May Weather in Chester, United States

Last updated: June 24, 2025

In May, the average temperature in Chester, United States hovers around 11°C (52°F). Expect a striking range from a chilly -8°C (17°F) to a warm 28°C (83°F). Rainfall is typical during this month, with an average precipitation of 75 mm (3.0 in) spread over 9 days, contributing to an overall average humidity of 72%. Prepare accordingly for varying weather!

May Temperature in Chester

In May in Chester, the average temperature is 11°C (52°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -8°C (17°F). Be prepared for a wide range of temperatures when traveling to Chester during this month.

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

The chart illustrates May 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, May typically has an average temperature of 11°C (52°F), with highs reaching up to 28°C (83°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec323235415162716961483931
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.

May Precipitation in Chester

In Chester in May, the precipitation amount is 75 mm (3.0 in) distributed over 9 days.

May Precipitation Trends in Chester

The chart displays monthly precipitation patterns in Chester, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Chester, May typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec21723219810075229172853106171
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Chester

In Chester in May, humidity is 72%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, often leaving travelers feeling slightly cold and clammy unless they are dressed in layers.

May Average Humidity in Chester

This chart illustrates the average monthly humidity levels in Chester, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Chester is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%83%72%67%56%42%46%67%86%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Chester

In Chester in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Chester.

Maximum UV Index Levels in Chester for May

The chart shows the monthly maximum UV Index (UVI) for Chester in May, 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 May, the maximum UV index in Chester typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45810121211119753
Data source: Chester May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)217 mm (8.5 inches)86%moderate
February Weather0°C (32°F)232 mm (9.1 inches)87%moderate
March Weather2°C (35°F)198 mm (7.8 inches)86%very high
April Weather5°C (42°F)100 mm (3.9 inches)83%very high
May Weather11°C (52°F)75 mm (3.0 inches)72%extreme
June Weather17°C (63°F)22 mm (0.9 inches)67%extreme
July Weather22°C (71°F)9 mm (0.3 inches)56%extreme
August Weather21°C (69°F)16 mm (0.6 inches)42%extreme
September Weather16°C (61°F)27 mm (1.1 inches)46%very high
October Weather9°C (49°F)53 mm (2.1 inches)67%high
November Weather4°C (39°F)106 mm (4.2 inches)86%moderate
December Weather-1°C (31°F)171 mm (6.7 inches)86%moderate

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