May weather forecastPoston, AZ

May

Weather in May

May, the last month of the spring in Poston, is a tropical month, with an average temperature varying between 90.1°F (32.3°C) and 68.4°F (20.2°C).

Temperature

May's arrival signals a subtle increase in average high-temperatures, moving from April's warm 82.8°F (28.2°C) to a tropical 90.1°F (32.3°C). The May nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 68.4°F (20.2°C).

Humidity

In Poston, the average relative humidity in May is 19%.

Rainfall

The months with the least rainfall are May and June Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

Daylight

In May, the average length of the day is 13h and 56min.
On the first day of the month, sunrise is at 5:47 am and sunset at 7:21 pm. On the last day of May, sunrise is at 5:27 am and sunset at 7:43 pm MST.

Sunshine

The average sunshine in May is 11.9h.

UV index

The average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, an average UV index of 7 transforms into the following instructions:
Deflect overexposure. Sun protection is a necessity. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in May, in Poston, records 90.1°F (32.3°C), while the low-temperature is 68.4°F (20.2°C).

In Poston, the average relative humidity in May is 19%.

The months with the least rainfall are May and June Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

In Poston, in May, it is raining for 1.2 days, with typically 0.04" (1mm) of accumulated precipitation.

The average day length in May is 13h and 56min.

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 7:43 pm MST.

In May, the average sunshine duration is 11.9h.

The average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

82.8°F

90.1°F

101.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.4mph

9.3mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

27.6

29.3

28.2

Average UV index

Average cloud cover

11%

Average visibility

6mi

Average temperature in May
Poston, AZ

Average high temperature in May: 90.1°F

The warmest month (with the highest average high temperature) is July (104.2°F).
The month with the lowest average high temperature is December (61.2°F).

Average low temperature in May: 68.4°F

The month with the highest average low temperature is August (85.6°F).
The coldest month (with the lowest average low temperature) is December (47.1°F).

Average pressure in May
Poston, AZ

Average pressure in May: 29.8"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

Average wind speed in May
Poston, AZ

Average wind speed in May: 8.4mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).

Average humidity in May
Poston, AZ

Average humidity in May: 19%

The months with the highest relative humidity are January and December (39%).
The month with the lowest relative humidity is June (15%).

Average rainfall in May
Poston, AZ

Average rainfall in May: 0.04"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in May
Poston, AZ

Average rainfall days in May: 1.2 days

The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is May (1.2 days).

Average daylight in May /
Average sunshine in May
Poston, AZ

Average daylight in May: 13h and 54min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

Average sunshine in May: 11h and 54min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in May
Poston, AZ

Average sunshine days in May: 29.3 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (20.2 days).

Average UV index in May
Poston, AZ

Average UV index in May: 7

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in May
Poston, AZ

Average cloud cover in May: 8

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in May
Poston, 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).