May Weather in National Park, United States

Last updated: June 24, 2025

In National Park, United States, the average temperature in May hovers around 18°C (65°F). Expect a minimum of 2°C (36°F) and a maximum of 34°C (94°F), creating a diverse climate experience. During this month, precipitation amounts to 131 mm (5.2 in) spread over approximately 12 days, contributing to an average humidity of 78%. Embrace the vibrant weather and prepare for a mix of warmth and occasional rain!

May Temperature in National Park

In May in National Park, the average temperature is 18°C (65°F). Maximums can reach 34°C (94°F), and minimums can be as low as 2°C (36°F). This makes National Park a great destination for travelers looking to enjoy both warm days and cool nights.

May Weather in National Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in National Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In National Park, May typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (94°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in National Park

In National Park in May, the precipitation amount is 131 mm (5.2 in) spread over 12 days.

May Precipitation Trends in National Park

The chart displays monthly precipitation patterns in National Park, 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 National Park, May typically receives around 131 mm (5.2 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 National Park

In National Park in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in National Park

This chart illustrates the average monthly humidity levels in National Park, 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 National Park 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 National Park

In National Park 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 National Park.

Maximum UV Index Levels in National Park for May

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

Data source: National Park 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 National Park Compares to Other Months

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

This table compares monthly weather conditions in National Park, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	59 mm (2.3 inches)	84%	moderate
February Weather	4°C (40°F)	104 mm (4.1 inches)	83%	moderate
March Weather	7°C (45°F)	105 mm (4.1 inches)	83%	high
April Weather	13°C (55°F)	98 mm (3.9 inches)	81%	very high
May Weather	18°C (65°F)	131 mm (5.2 inches)	78%	very high
June Weather	23°C (74°F)	113 mm (4.4 inches)	79%	very high
July Weather	26°C (79°F)	128 mm (5.0 inches)	74%	very high
August Weather	25°C (77°F)	127 mm (5.0 inches)	72%	very high
September Weather	22°C (71°F)	91 mm (3.6 inches)	75%	very high
October Weather	16°C (62°F)	112 mm (4.4 inches)	81%	high
November Weather	8°C (47°F)	80 mm (3.2 inches)	85%	moderate
December Weather	4°C (40°F)	97 mm (3.8 inches)	84%	moderate