May weather forecastMaricopa, AZ
May
Weather in May
May marks the official arrival of summer in Maricopa with noticeably warmer days. The month holds a distinctive position, being one of the sunniest months of the year, owing to less cloud coverage. May witnesses the least rainfall, merely 0.08in, announcing the driest spell of the year. The increased temperature, fluctuating from 66.9°F (19.4°C) to 90.5°F (32.5°C), further intensifies the summer experience. As toward the month end, residents anticipate the scorching temperatures of June, the hottest month of the year.Temperature
As May begins, there's a slight increase in the average high-temperature, moving from a warm 82.8°F (28.2°C) in April to a tropical 90.5°F (32.5°C). Despite the high peak temperatures, Maricopa witnesses an average nighttime cooling to an enjoyable 66.9°F (19.4°C) in May.Humidity
The average relative humidity in May is 19%.Rainfall
May and June are months with the least rain when the rain falls for 1.7 days and typically aggregates up to 0.08" (2mm) of rain.Daylight
In May, the average length of the day is 13h and 53min.On the first day of the month, sunrise is at 5:39 am and sunset at 7:10 pm. On the last day of May, sunrise is at 5:20 am and sunset at 7:31 pm MST.
Sunshine
In May, the average sunshine is 11.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 8 in May transforms into the following instructions:
Always stay safe. Unprotected skin and eyes can get damaged rapidly. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Maricopa, AZ
- Average high temperature in May: 90.5°F
The warmest month (with the highest average high temperature) is July (102.4°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in May: 66.9°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
Maricopa, AZ
- Average pressure in May: 29.84"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in May
Maricopa, AZ
- Average wind speed in May: 6.5mph
The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity in May
Maricopa, AZ
- Average humidity in May: 19%
The months with the highest relative humidity are January and December (44%).
The month with the lowest relative humidity is June (17%).
Average rainfall in May
Maricopa, AZ
- Average rainfall in May: 0.08"
The wettest month (with the highest rainfall) is July (1.02").
The driest months (with the least rainfall) are May and June (0.08").
Average rainfall days in May
Maricopa, AZ
- Average rainfall days in May: 1.7 days
The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is June (1.2 days).
Average daylight in May /
Average sunshine in May
Maricopa, 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
Maricopa, AZ
- Average sunshine days in May: 28.8 days
The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is July (16.4 days).
Average UV index in May
Maricopa, AZ
- Average UV index in May: 8
The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Maricopa, AZ
- Average cloud cover in May: 8
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in May
Maricopa, 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).





