May weather forecastSunnyside, UT
May
Weather in May
May, the last month of the spring in Sunnyside, is a refreshing month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 44.1°F (6.7°C).Temperature
Noticing a change, the average high-temperature during May moves from April's fresh 54.5°F (12.5°C) to a refreshing 64.9°F (18.3°C). The average low-temperature during May nights is a frosty 44.1°F (6.7°C).Humidity
In Sunnyside, Utah, the average relative humidity in May is 38%.Rainfall
In Sunnyside, during May, the rain falls for 9.7 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, there are 79.6 rainfall days, and 8.7" (221mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.9 snowfall days, in May, Sunnyside aggregates 0.28" (7mm) of snow. Throughout the year, there are 41 snowfall days, and 25.87" (657mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:56 am and sunset at 8:42 pm MDT.
Sunshine
In May, the average sunshine is 11.3h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during May translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sunnyside, UT
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in May: 44.1°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in May
Sunnyside, UT
- Average pressure in May: 29.86"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Sunnyside, UT
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in May
Sunnyside, UT
- Average humidity in May: 38%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (29%).
Average rainfall in May
Sunnyside, UT
- Average rainfall in May: 0.83"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Sunnyside, UT
- Average rainfall days in May: 9.7 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in May
Sunnyside, UT
- Average snowfall in May: 0.28"
The month with the highest snowfall is March (5.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sunnyside, UT
- Average snowfall days in May: 0.9 days
The months with the highest number of snowfall days are February and December (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sunnyside, UT
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 11h and 18min
The months with the most sunshine are June and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in May
Sunnyside, UT
- Average sunshine days in May: 17.5 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in May
Sunnyside, 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
Sunnyside, UT
- Average cloud cover in May: 19
The month with the most cloud cover is January (Cloud cover 32).
The month with the least cloud cover is September (Cloud cover 11).
Average visibility in May
Sunnyside, 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).





