May Weather in Bolton, United States

Last updated: June 24, 2025

In May, the average temperature in Bolton, United States hovers around 23°C (74°F), with minimums dipping to 7°C (45°F) and maximums soaring up to 35°C (95°F). Expect a precipitation amount of 134 mm (5.3 in) spread over 11 days, and experience a notably high average humidity of 83%.

May Temperature in Bolton

In May in Bolton, the average temperature is 23°C (74°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 7°C (45°F). This diverse temperature range makes Bolton an ideal destination for travelers seeking to enjoy both warm days and cool evenings.

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

The chart illustrates May temperature patterns in Bolton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bolton, May typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (45°F).

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

May Precipitation in Bolton

In Bolton in May, the precipitation amount is 134 mm (5.3 in) spread over 11 days.

May Precipitation Trends in Bolton

The chart displays monthly precipitation patterns in Bolton, 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 Bolton, May typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 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 Bolton

In Bolton in May humidity is 83%. With an average temperature of 23°C (74°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier, and leaving you constantly in search of a cool breeze or shade while exploring.

May Average Humidity in Bolton

This chart illustrates the average monthly humidity levels in Bolton, 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 Bolton is approximately 83%, 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 Bolton

In Bolton 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 Bolton.

Maximum UV Index Levels in Bolton for May

The chart shows the monthly maximum UV Index (UVI) for Bolton 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 Bolton typically reaches 11, which falls under the extreme exposure category.

Data source: Bolton 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 Bolton Compares to Other Months

Weather in Bolton varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bolton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bolton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	121 mm (4.7 inches)	84%	moderate
February Weather	12°C (53°F)	161 mm (6.3 inches)	83%	high
March Weather	16°C (61°F)	122 mm (4.8 inches)	80%	very high
April Weather	18°C (65°F)	178 mm (7.0 inches)	82%	extreme
May Weather	23°C (74°F)	134 mm (5.3 inches)	83%	extreme
June Weather	26°C (79°F)	132 mm (5.2 inches)	80%	extreme
July Weather	28°C (82°F)	101 mm (4.0 inches)	80%	extreme
August Weather	27°C (81°F)	135 mm (5.3 inches)	75%	extreme
September Weather	26°C (79°F)	93 mm (3.7 inches)	73%	very high
October Weather	20°C (69°F)	125 mm (4.9 inches)	76%	very high
November Weather	13°C (55°F)	79 mm (3.1 inches)	84%	high
December Weather	11°C (52°F)	121 mm (4.8 inches)	88%	moderate