Denver Weather in May

May's weather is the rainiest and cloudiest of the year for Denver, Colorado. Although in this dry climate, only one in three days during May gets any precipitation.

This page gives detailed information on the typical May temperature, precipitation, snow, sun, humidity, wind and storms for Denver. The numbers here are historical averages based on climate data gathered in the Denver community of Stapleton.

Temperature Weather iconTemperature

72 °F May average high 22 °C
43 °F May average low 6 °C
18 days 70 °F max. or more (21 °C)
9 days 40 °F min. or less (4 °C)

Nearly every day in May warms to over 50 degrees Fahrenheit (10 degrees Celsius) in Denver. The city averages 8 days this month when the thermometer reaches into the 80s °F (over 26 °C). Some years briefly experience 90-degree F (over 32 °C) temperatures during May.

The thermometer dips to freezing or below on one or two nights. But May does not normally get as cold as 20 °F (-8 °C).

Rainy Weather iconPrecipitation

2.3 in total precipitation 58 mm
11 days of rain or snowfall

Half the time, Denver receives 1.3 to 3.1 inches (33 to 78 mm) of precipitation in May. One in four years has drier weather, while another one in four is wetter.

Snowy Weather iconSnow

1.4 in total snowfall 4 cm
1 day with new snow

Often Denver receives no fresh snow in May. In one out of four years, May gets 2.1 inches (5 cm) or more of fresh snow.

Sunny Weather iconSun

64 % sunshine
6 days clear skies

The sun's rays reach the ground in Denver during 64 percent of daylight hours on average in May, for a total of 285 hours in the month. Typically on 6 days this month the sky is mainly clear, with at most 30 percent cloud cover. May is Denver's cloudiest month.

Sunlight in May at Denver lasts for 14 hours and 23 minutes a day on average. The shortest day of the month is the 1st with 13 hours and 54 minutes of daylight. By the end of the month, the days have lengthened to 14:47 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

52 % May average humidity

The relative humidity in Denver during May usually peaks at 70 percent in the morning then drops to 35 percent by early afternoon.

Local Time2 am5 am8 am11 am2 pm5 pm8 pm11 pm
Humidity % 67 70 53 39 35 38 51 61

Windy Weather iconWind

9.3 mph May wind speed average 15.0 kph

May is a little windier than most other months in Denver.

Stormy Weather iconStorms

1 day rainfall of 0.5 inches (13 mm) or more
6 days with thunderstorms in May

The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

Denver Weather
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