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

71 °F May average high 21 °C
44 °F May average low 7 °C

In most years, Denver averages a daily maximum temperature for May that's between 67 and 74 degrees Fahrenheit (19 to 23 degrees Celsius). The minimum temperature usually falls between 42 and 46 °F (5 to 8 °C).

The days at Denver warm quickly during May. By the end of the month, the temperature has climbed around 10 °F (5 °C) above what it was at the start.

17 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 °F (10 °C) in Denver. The city averages 7 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.

At night, the thermometer dips to freezing or below on one or two days. 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

May has more precipitation than any other month. Half the time, Denver receives 1 to 4 inches (33 to 91 mm) of precipitation in May. One in four years has drier weather, while another one in four is wetter.

Snowy Weather iconSnow

1.1 in total snowfall 2.8 cm
1 day with new snow

Most years, Denver receives no fresh snow in May. In one out of four years, May gets 1.2 inches (3 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

May has heavier rainfall than other months in Denver. About once every two years, an inch (25 mm) or more of rain drenches the city in one day this month. Also every few years, Denver gets an inch (2.5 cm) or more of fresh snow in one day during May.


These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.

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