May weather forecast and climate
Denver, CO

The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
The colorful sky above the sunlit Denver city, Colorado in autumn, with a water body surrounded by trees, and majestic skyscrapers afar
May is the heart of the spring in Denver with abundant sunshine as well as cloudy and rainy days. The sunlight lasts for a massive 14 hours as the spring brings rainfall to the tune of 2.1" (53.3mm) in one out of three days in May.
Temperatures register up to 90°F (32.2°C) for a few days, while the nights rarely drop below 20°F (-6.7°C). While spring is a great time to spend in the parks and the city, camping and backpacking trips in the Rockies attract enormous interest as the temperatures warm up. Do remember that the region has extreme temperatures - take adequate precautions as the nights in the mountains may be snowy and chilly.

What is the temperature in May in Denver?

In May, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 42.6°F (5.9°C).

How much does it rain in Denver in May?

In Denver, in May, during 9.4 rainfall days, typically, 2.1" (53.8mm) of precipitation is accumulated.

What is the last month it snows in Denver?

May is the last month it regularly snows. During 0.6 snowfall days, in May, Denver aggregates 1.1" (27.9mm) of snow.
Average temperature in May - Denver, CO
  • Average high temperature in May: 21.9°C

The warmest month (with the highest average high temperature) is July (31.9°C).
The month with the lowest average high temperature is December (6°C).

  • Average low temperature in May: 5.9°C

The month with the highest average low temperature is July (14.9°C).
The coldest month (with the lowest average low temperature) is December (-8.3°C).

Average humidity in May - Denver, CO
  • Average humidity in May: 51.7%

The month with the highest relative humidity is December (56.6%).
The month with the lowest relative humidity is July (47.8%).

Average rainfall in May - Denver, CO
  • Average rainfall in May: 53.8mm

The wettest month (with the highest rainfall) is July (54.9mm).
The driest month (with the lowest rainfall) is December (8.9mm).

Average rainfall days in May - Denver, CO
  • Average rainfall days in May: 9.4 days

The month with the highest number of rainy days is May (9.4 days).
Months with the lowest number of rainy days are January and December (4.1 days).

Average snowfall in May - Denver, CO
  • Average snowfall in May: 27.9mm

The month with the highest snowfall is March (271.8mm).
Months with the lowest snowfall are June, July and August (0mm).

Average snowfall days in May - Denver, CO
  • Average snowfall days in May: 0.6 days

The month with the highest number of snowfall days is March (5.8 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in May / Average sunshine in May - Denver, CO
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 9.4h

Months with most sunshine are June and July (Average sunshine: 10.5h).
The month with least sunshine is December (Average sunshine: 6.3h).

Average UV index in May - Denver, CO
  • Average UV index in May: 9

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 2).

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