May weather forecastMesa, AZ
May
Weather in May
May's weather in Mesa, Arizona marks the swift transition from the gentle springtime to the characteristic harsh desert summer. The intensifying heat resulting from longer sunshine hours reshapes the environment, driving down humidity to rather low levels. The clear skies and bright sun work in tandem to provide excellent visibility throughout Mesa. Despite the increasing temperatures, the wind speed remains relatively stable, providing slight relief from the escalating desert heat. Invariably, May sees a significant rise in temperatures, with scorching high temperatures peaking at 90.1°F (32.3°C) and lows maintaining a warm 66.6°F (19.2°C).Temperature
A slight uplift in the average high-temperature marks May in Mesa, adjusting from April's warm 82°F (27.8°C) to a hot 90.1°F (32.3°C). May in Mesa is characterized by a distinct thermal shift, with nighttime lows averaging at an enjoyable 66.6°F (19.2°C).Humidity
In Mesa, the average relative humidity in May is 19%.Rainfall
In May, the rain falls for 2.3 days. Throughout May, 0.12" (3mm) of precipitation is accumulated. Throughout the year, there are 60.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Daylight
In Mesa, the average length of the day in May is 13h and 54min.On the first day of May, sunrise is at 5:38 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 7:31 pm MST.
Sunshine
In Mesa, the average sunshine in May is 11.9h.UV index
In May, the average daily maximum UV index in Mesa is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 7 during May translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mesa, AZ
- Average high temperature in May: 90.1°F
The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in May: 66.6°F
The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in May
Mesa, AZ
- Average pressure in May: 29.85"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in May
Mesa, AZ
- Average wind speed in May: 6.4mph
The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).
Average humidity in May
Mesa, AZ
- Average humidity in May: 19%
The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (17%).
Average rainfall in May
Mesa, AZ
- Average rainfall in May: 0.12"
The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Mesa, AZ
- Average rainfall days in May: 2.3 days
The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).
Average daylight in May /
Average sunshine in May
Mesa, 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: 11h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in May
Mesa, AZ
- Average sunshine days in May: 28.4 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in May
Mesa, AZ
- Average UV index in May: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Mesa, AZ
- Average cloud cover in May: 8
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in May
Mesa, 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).
