May Weather in Lyons, United States

Last updated: June 24, 2025

In May, the average temperature in Lyons, United States hovers around 15°C (60°F). However, be prepared for a range, as temperatures can dip to a chilly -2°C (28°F) or rise to a sweltering 35°C (95°F). Expect 129 mm (5.1 in) of precipitation spread over 14 days, contributing to an average humidity of 82%.

May Temperature in Lyons

In May in Lyons, the average temperature is 15°C (60°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as -2°C (28°F). Be prepared for a wide range of temperatures while traveling during this time.

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

The chart illustrates May temperature patterns in Lyons, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyons, May typically has an average temperature of 15°C (60°F), with highs reaching up to 35°C (95°F) and lows dropping to around -2°C (28°F).

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

May Precipitation in Lyons

In Lyons in May, the precipitation amount is 129 mm (5.1 in) over the course of 14 days.

May Precipitation Trends in Lyons

The chart displays monthly precipitation patterns in Lyons, 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 Lyons, May typically receives around 129 mm (5.1 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 Lyons

In Lyons in May humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

May Average Humidity in Lyons

This chart illustrates the average monthly humidity levels in Lyons, 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 Lyons 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 Lyons

In Lyons 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 Lyons.

Maximum UV Index Levels in Lyons for May

The chart shows the monthly maximum UV Index (UVI) for Lyons 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 Lyons typically reaches 9, which falls under the very high exposure category.

Data source: Lyons 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 Lyons Compares to Other Months

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

This table compares monthly weather conditions in Lyons, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	64 mm (2.5 inches)	87%	low
February Weather	-3°C (27°F)	66 mm (2.6 inches)	87%	moderate
March Weather	2°C (37°F)	64 mm (2.5 inches)	86%	moderate
April Weather	8°C (47°F)	87 mm (3.4 inches)	87%	very high
May Weather	15°C (60°F)	129 mm (5.1 inches)	82%	very high
June Weather	21°C (70°F)	118 mm (4.6 inches)	81%	very high
July Weather	24°C (75°F)	68 mm (2.7 inches)	78%	very high
August Weather	22°C (72°F)	66 mm (2.6 inches)	79%	very high
September Weather	18°C (65°F)	112 mm (4.4 inches)	79%	high
October Weather	11°C (53°F)	127 mm (5.0 inches)	82%	moderate
November Weather	3°C (38°F)	63 mm (2.5 inches)	87%	moderate
December Weather	0°C (32°F)	64 mm (2.5 inches)	86%	low