Salt Lake City Weather in May

Salt Lake City, Utah enjoys plenty of warm weather weather during May. This is one of the rainier months of the year here. But with the dry climate, the amount of rainfall is never extreme.

This page gives detailed information on the typical May weather for Salt Lake City.

You can jump directly to data and descriptions for:

The numbers here are historical averages based on climate data gathered at the Salt Lake City International Airport, located a few miles northwest of the city's center.

Temperature Weather iconTemperature

72 °F May average high 22 °C
48 °F May average low 9 °C

In most years, Salt Lake City averages a daily maximum temperature for May that's between 68 and 76 degrees Fahrenheit (20 to 24 degrees Celsius). The minimum temperature usually falls between 45 and 50 °F (7 to 10 °C).

The days at Salt Lake City warm more quickly during May. By the end of the month, the temperature has climbed around 10 °F (6 °C) above what it was at the start.

18 days 70 °F max. or more (21 °C)
20 days 50 °F min. or less (10 °C)

The temperature rises nearly every day in May to over 60 °F (21 °C) at Salt Lake City. The city averages 8 days this month when the thermometer reaches into the 80s °F (over 27 °C). Some years even have a day of 90-degree (over 32 °C) weather in May.

The thermometer dips to 40 °F (4 °C) or below on 5 nights. May rarely gets cold enough for frost. A May frost occurs at Salt Lake City about twice a decade.

Rainy Weather iconPrecipitation

2.0 in total precipitation 50 mm
9 days of rain

Half the time, Salt Lake City receives 1.2 to 2.8 inches (30 to 70 mm) of rainfall in May. One in four years has drier weather, while another one in four is wetter. A couple times a decade a light snowfall lands in May.

Sunny Weather iconSun

72 % sunshine
9 days clear skies

The sun's rays reach the ground in Salt Lake City during 72 percent of daylight hours on average in May, for a total of 323 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in May at Salt Lake City lasts for 14 hours and 28 minutes a day on average. The shortest day of the month is the 1st with 13 hours and 58 minutes of daylight. By the end of the month, the days have lengthened to 14:53 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

49 % May average humidity

The relative humidity in Salt Lake City during May usually peaks at 65 percent in the morning then drops to 33 percent by late afternoon.

Local Time2 am5 am8 am11 am2 pm5 pm8 pm11 pm
Humidity % 63 65 51 38 34 33 48 57

Windy Weather iconWind

9.4 mph May wind speed average 15.1 kph

May is a little windier than most other months in Salt Lake City.

Stormy Weather iconStorms

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

The frequency of thunderstorms picks up in May.

About once a decade Salt Lake City has a storm in March that leaves one to three inches (2.5 to 8 cm) of snow.


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.

Salt Lake City Weather
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