May weather forecastDelta, UT
May
Weather in May
In May, Delta begins to experience summer weather, with average high temperatures rising sharply to 70.9°F (21.6°C). Similarly, the lows also increase, indicating warmer nights. In contrast to April, the rainfall decreases to 0.63" (16mm), marking it as a relatively drier month. The hours of sunshine increase, resulting in extended daylight as spring transitions into summer. The average relative humidity of around 34% signifies warm and dry conditions that are typical of summer months.Temperature
The arrival of May brings an increase in high-temperatures, moving from an enjoyable 60.8°F (16°C) in April to an agreeable 70.9°F (21.6°C). During May, Delta observes a consistent average nighttime temperature of 49.5°F (9.7°C).Humidity
In Delta, the average relative humidity in May is 34%.Rainfall
In Delta, in May, during 8.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Delta, during the entire year, the rain falls for 82.6 days and collects up to 7.01" (178mm) of precipitation.Snowfall
In Delta, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 22min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:24 pm. On the last day of May, sunrise is at 6:05 am and sunset at 8:50 pm MDT.
Sunshine
In May, the average sunshine is 11.3h.UV index
The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Delta, UT
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 49.5°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in May
Delta, UT
- Average pressure in May: 29.88"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Delta, UT
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is June (8.8mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in May
Delta, UT
- Average humidity in May: 34%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (24%).
Average rainfall in May
Delta, UT
- Average rainfall in May: 0.63"
The wettest month (with the highest rainfall) is March (0.91").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in May
Delta, UT
- Average rainfall days in May: 8.5 days
The month with the highest number of rainy days is April (10 days).
The month with the least rainy days is June (3.9 days).
Average snowfall in May
Delta, UT
- Average snowfall in May: 0"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Delta, UT
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is December (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Delta, 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 30min).
- Average sunshine in May: 11h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in May
Delta, UT
- Average sunshine days in May: 19.8 days
The month with the most sunshine days is June (24.1 days).
The month with the least sunshine days is February (16.3 days).
Average UV index in May
Delta, UT
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Delta, UT
- Average cloud cover in May: 19
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in May
Delta, 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).





