May Weather in Chester, United States

Last updated: June 24, 2025

In May, the average temperature in Chester, United States hovers around 20°C (68°F). However, prepare for a range with minimums dipping to 3°C (38°F) and maximums soaring to 34°C (93°F). Expect a total precipitation of 157 mm (6.2 in) over about 14 days, contributing to a notable average humidity of 82%.

May Temperature in Chester

In May in Chester, the average temperature is 20°C (68°F). Maximums can reach 34°C (93°F), and minimums can be as low as 3°C (38°F). Be prepared for a range of weather conditions during 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 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (38°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 157 mm (6.2 in) spread over a duration of 14 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 157 mm (6.2 inches) of precipitation spread over approximately 14 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 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.

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 82%, 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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme 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	1°C (34°F)	88 mm (3.5 inches)	86%	moderate
February Weather	3°C (38°F)	108 mm (4.2 inches)	84%	moderate
March Weather	9°C (48°F)	136 mm (5.3 inches)	84%	high
April Weather	13°C (56°F)	144 mm (5.7 inches)	80%	very high
May Weather	20°C (68°F)	157 mm (6.2 inches)	82%	extreme
June Weather	25°C (77°F)	87 mm (3.4 inches)	83%	extreme
July Weather	27°C (80°F)	88 mm (3.5 inches)	79%	very high
August Weather	25°C (77°F)	103 mm (4.1 inches)	76%	very high
September Weather	23°C (73°F)	64 mm (2.5 inches)	75%	very high
October Weather	16°C (60°F)	125 mm (4.9 inches)	74%	high
November Weather	7°C (45°F)	84 mm (3.3 inches)	85%	moderate
December Weather	5°C (41°F)	77 mm (3.0 inches)	88%	moderate