May weather forecastDuncan, AZ
May
Weather in May
The last month of the spring, May, is a moderately hot month in Duncan, Arizona, with an average temperature varying between 52.5°F (11.4°C) and 80.2°F (26.8°C).Temperature
As Duncan transitions into May, the average high-temperature is observed to slightly rise from an agreeable 72.7°F (22.6°C) in April to a warm 80.2°F (26.8°C). During May, the nighttime temperature in Duncan presents a clear descent from the daily peaks, falling to an average of 52.5°F (11.4°C).Humidity
In Duncan, the average relative humidity in May is 23%.Rainfall
In Duncan, Arizona, in May, during 3.5 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Duncan, during the entire year, the rain falls for 92.3 days and collects up to 12.13" (308mm) of precipitation.Snowfall
In Duncan, snow does not fall in April through November.Daylight
In Duncan, the average length of the day in May is 13h and 51min.On the first day of May, sunrise is at 5:28 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 7:19 pm MST.
Sunshine
In May, the average sunshine is 11.9h.UV index
The average daily maximum UV index in May in Duncan is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 6 in May suggests the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Duncan, AZ
- Average high temperature in May: 80.2°F
The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in May: 52.5°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in May
Duncan, AZ
- Average pressure in May: 29.88"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Duncan, AZ
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is December (5.1mph).
Average humidity in May
Duncan, AZ
- Average humidity in May: 23%
The month with the highest relative humidity is December (53%).
The month with the lowest relative humidity is June (22%).
Average rainfall in May
Duncan, AZ
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is July (2.44").
The driest month (with the least rainfall) is April (0.2").
Average rainfall days in May
Duncan, AZ
- Average rainfall days in May: 3.5 days
The months with the highest number of rainy days are July and August (16.8 days).
The month with the least rainy days is May (3.5 days).
Average snowfall in May
Duncan, AZ
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.87").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Duncan, AZ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Duncan, 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 months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in May
Duncan, AZ
- Average sunshine days in May: 26.4 days
The month with the most sunshine days is May (26.4 days).
The month with the least sunshine days is August (8.3 days).
Average UV index in May
Duncan, AZ
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Duncan, AZ
- Average cloud cover in May: 9
The month with the most cloud cover is December (Cloud cover 22).
The months with the least cloud cover are May and June (Cloud cover 9).
Average visibility in May
Duncan, 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).





