May Weather in Preston, United States

Last updated: June 24, 2025

In May, the average temperature in Preston, United States is a comfortable 19°C (66°F). However, be prepared for a range, as temperatures can dip to a chilly 4°C (40°F) or soar to a warm 32°C (90°F). Expect about 125 mm (4.9 in) of precipitation over 12 days, contributing to an average humidity level of 78%. Stay ready for the mix of weather that this month brings!

May Temperature in Preston

In May in Preston, the average temperature is 19°C (66°F). Maximum temperatures can reach 32°C (90°F), and minimums can drop as low as 4°C (40°F). This makes it a perfect time to explore the outdoors, so pack accordingly for both warm and cool conditions during your travels.

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

The chart illustrates May temperature patterns in Preston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Preston, May typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Preston

In Preston in May, the total precipitation amount is 125 mm (4.9 in) spread over 12 days.

May Precipitation Trends in Preston

The chart displays monthly precipitation patterns in Preston, 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 Preston, May typically receives around 125 mm (4.9 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 Preston

In Preston in May, humidity is 78%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making traveling quite uncomfortable unless you're well-prepared with lightweight, breathable clothing and frequent breaks to stay hydrated.

May Average Humidity in Preston

This chart illustrates the average monthly humidity levels in Preston, 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 Preston is approximately 78%, 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 Preston

In Preston in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Preston.

Maximum UV Index Levels in Preston for May

The chart shows the monthly maximum UV Index (UVI) for Preston 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 Preston typically reaches 10, which falls under the very high exposure category.

Data source: Preston 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 Preston Compares to Other Months

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

This table compares monthly weather conditions in Preston, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	65 mm (2.6 inches)	84%	moderate
February Weather	5°C (42°F)	103 mm (4.1 inches)	83%	moderate
March Weather	8°C (47°F)	89 mm (3.5 inches)	83%	high
April Weather	14°C (57°F)	89 mm (3.5 inches)	81%	very high
May Weather	19°C (66°F)	125 mm (4.9 inches)	78%	very high
June Weather	24°C (75°F)	97 mm (3.8 inches)	79%	very high
July Weather	27°C (81°F)	152 mm (6.0 inches)	74%	very high
August Weather	26°C (79°F)	161 mm (6.3 inches)	72%	very high
September Weather	23°C (73°F)	105 mm (4.1 inches)	75%	very high
October Weather	18°C (64°F)	123 mm (4.8 inches)	81%	high
November Weather	10°C (50°F)	82 mm (3.2 inches)	85%	moderate
December Weather	6°C (43°F)	100 mm (3.9 inches)	84%	moderate