May Weather in Chester, United States

Last updated: June 24, 2025

In Chester, United States, the average temperature in May hovers around 13°C (56°F). Visitors can expect a range with minimums dipping to -1°C (31°F) and maximums soaring up to 32°C (90°F). Throughout the month, precipitation averages 85 mm (3.3 in) over 12 days, paired with a comfortable average humidity of 76%.

May Temperature in Chester

In May in Chester, the average temperature is 13°C (56°F). Maximums can reach 32°C (90°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

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 13°C (56°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (31°F).

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

May Precipitation in Chester

In Chester in May, the precipitation amount is 85 mm (3.3 in) over a duration of 12 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 85 mm (3.3 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Chester

In Chester in May humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden air.

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 76%, offering insight into how humid the weather typically is during this month.

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 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 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	72 mm (2.9 inches)	89%	moderate
February Weather	-4°C (26°F)	85 mm (3.3 inches)	88%	moderate
March Weather	0°C (32°F)	73 mm (2.9 inches)	86%	high
April Weather	7°C (44°F)	122 mm (4.8 inches)	84%	very high
May Weather	13°C (56°F)	85 mm (3.3 inches)	76%	very high
June Weather	19°C (66°F)	90 mm (3.5 inches)	72%	very high
July Weather	22°C (71°F)	126 mm (5.0 inches)	66%	very high
August Weather	20°C (69°F)	92 mm (3.6 inches)	64%	very high
September Weather	17°C (62°F)	79 mm (3.1 inches)	72%	high
October Weather	10°C (51°F)	142 mm (5.6 inches)	81%	high
November Weather	2°C (36°F)	101 mm (4.0 inches)	87%	moderate
December Weather	-3°C (27°F)	104 mm (4.1 inches)	84%	low