May Weather in Denver, United States

Last updated: June 24, 2025

In Denver, United States during May, the average temperature hovers around 21°C (70°F). However, temperatures can swing from a chilly 4°C (40°F) to a toasty 35°C (96°F). Expect the skies to open up with an average precipitation of 119 mm (4.7 in) over the course of 13 days, adding to the humidity, which sits at a notable 83%. Stay prepared for a mix of weather throughout the month!

May Temperature in Denver

In May in Denver, the average temperature is 21°C (70°F). The maximum can reach 35°C (96°F), and the minimum can be as low as 4°C (40°F). It's a great time to travel for those who enjoy warm weather with a chance to experience cooler evenings.

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

The chart illustrates May temperature patterns in Denver, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Denver, May typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (40°F).

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

May Precipitation in Denver

In Denver in May, the precipitation amount is 119 mm (4.7 in) spread over 13 days.

May Precipitation Trends in Denver

The chart displays monthly precipitation patterns in Denver, 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 Denver, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 13 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 Denver

In Denver in May humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

May Average Humidity in Denver

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

In Denver 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 Denver.

Maximum UV Index Levels in Denver for May

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

Data source: Denver 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 Denver Compares to Other Months

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

This table compares monthly weather conditions in Denver, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	90 mm (3.5 inches)	86%	moderate
February Weather	9°C (48°F)	116 mm (4.6 inches)	85%	high
March Weather	12°C (53°F)	87 mm (3.4 inches)	84%	very high
April Weather	16°C (62°F)	111 mm (4.4 inches)	82%	very high
May Weather	21°C (70°F)	119 mm (4.7 inches)	83%	very high
June Weather	25°C (77°F)	79 mm (3.1 inches)	82%	extreme
July Weather	27°C (81°F)	88 mm (3.5 inches)	80%	extreme
August Weather	26°C (79°F)	103 mm (4.0 inches)	74%	very high
September Weather	23°C (74°F)	128 mm (5.0 inches)	75%	very high
October Weather	18°C (65°F)	107 mm (4.2 inches)	79%	very high
November Weather	10°C (51°F)	87 mm (3.4 inches)	87%	moderate
December Weather	8°C (46°F)	119 mm (4.7 inches)	87%	moderate