May weather forecastSalt Lake City, UT

May
Weather in May
May in Salt Lake City, Utah is a showcase of perfect spring weather. The temperature continues to rise from April, offering a delightful blend of warmth and freshness. Residents can look forward to even sunnier days in June, although the increase in temperature will also bring less rainfall. The foliage is in full bloom, with the city parks being the ideal spots for picnics and leisurely strolls. As the month progresses, locals and tourists are increasingly drawn to the sunny weather and relatively clear skies.Temperature
With the onset of May, Salt Lake City's weather sees a temperature rise, transitioning from a cool 53.6°F (12°C) in April to a comfortable 64.2°F (17.9°C). In Salt Lake City, an average nighttime temperature of 43.7°F (6.5°C) is expected during May.Humidity
In Salt Lake City, the average relative humidity in May is 50%.Rainfall
In Salt Lake City, in May, it is raining for 7 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 71.6 rainfall days, and 4.21" (107mm) of precipitation is accumulated.Snowfall
In Salt Lake City, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 29min.On the first day of May, sunrise is at 6:24 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:52 pm MDT.
Sunshine
The average sunshine in May is 11.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Salt Lake City, UT
- Average high temperature in May: 64.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in May: 43.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Salt Lake City, UT
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Salt Lake City, UT
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity in May
Salt Lake City, UT
- Average humidity in May: 50%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in May
Salt Lake City, UT
- Average rainfall in May: 0.31"
The wettest month (with the highest rainfall) is March (0.51").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in May
Salt Lake City, UT
- Average rainfall days in May: 7 days
The month with the highest number of rainy days is April (8.9 days).
The month with the least rainy days is June (4 days).
Average snowfall in May
Salt Lake City, UT
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Salt Lake City, UT
- Average snowfall days in May: 0.1 days
The months with the highest number of snowfall days are January and February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Salt Lake City, UT
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 11h and 18min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in May
Salt Lake City, UT
- Average sunshine days in May: 22 days
The month with the most sunshine days is June (23.8 days).
The month with the least sunshine days is February (19 days).
Average UV index in May
Salt Lake City, UT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Salt Lake City, UT
- Average cloud cover in May: 20
The months with the most cloud cover are January and February (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in May
Salt Lake City, UT
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





