May weather forecastYuma, AZ

May
Weather in May
As the gateway to summer, May in Yuma sees another jump in temperatures, but the city’s low humidity helps keep conditions from becoming unbearable. This month sees an unusual decrease in cloud cover percentage to 6%, making the sky nearly always clear of clouds. Residents and visitors enjoy long sunny days and typically warm evenings, perfect for socializing outdoors. Rainfall remains a rarity, ensuring uninterrupted enjoyment of outdoor activities. The steadily climbing temperatures turn Yuma into a warm haven in the midst of the desert.Temperature
The beginning of May in Yuma marks a minor shift in the average high-temperature, moving from April's warm 85.1°F (29.5°C) to a hot 91.6°F (33.1°C). The month of May sees a significant daily temperature drop, recording an average low-temperature of 68.5°F (20.3°C).Humidity
The average relative humidity in May in Yuma, Arizona, is 24%.Rainfall
The months with the least rainfall in Yuma are May and June Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.Daylight
In Yuma, the average length of the day in May is 13h and 51min.On the first day of the month, sunrise is at 5:50 am and sunset at 7:20 pm. On the last day of May, in Yuma, sunrise is at 5:31 am and sunset at 7:41 pm MST.
Sunshine
The average sunshine in May is 12h.UV index
The average daily maximum UV index in May in Yuma is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 7 during May leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Yuma, AZ
- Average high temperature in May: 91.6°F
The warmest month (with the highest average high temperature) is July (105.3°F).
The month with the lowest average high temperature is December (66°F).
- Average low temperature in May: 68.5°F
The month with the highest average low temperature is August (86.4°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).
Average pressure in May
Yuma, AZ
- Average pressure in May: 29.8"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).
Average wind speed in May
Yuma, AZ
- Average wind speed in May: 8.2mph
The windiest months (with the highest average wind speed) are April and July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.6mph).
Average humidity in May
Yuma, AZ
- Average humidity in May: 24%
The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (22%).
Average rainfall in May
Yuma, AZ
- Average rainfall in May: 0.04"
The wettest months (with the highest rainfall) are July and September (0.39").
The driest months (with the least rainfall) are May and June (0.04").
Average rainfall days in May
Yuma, AZ
- Average rainfall days in May: 0.8 days
The month with the highest number of rainy days is July (5.8 days).
The month with the least rainy days is May (0.8 days).
Average daylight in May /
Average sunshine in May
Yuma, AZ
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 12h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in May
Yuma, AZ
- Average sunshine days in May: 30.2 days
The month with the most sunshine days is May (30.2 days).
The month with the least sunshine days is July (22.1 days).
Average UV index in May
Yuma, AZ
- Average UV index in May: 7
The months with the highest UV index are June, July, August and September (UV index 8).
The months with the lowest UV index are November and December (UV index 4).
Average cloud cover in May
Yuma, AZ
- Average cloud cover in May: 6
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in May
Yuma, AZ
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





