Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Alto's transition into May sees a mild rise in the average high-temperature, edging from 74.3°F (23.5°C) in April to a still warm 81.3°F (27.4°C). Alto experiences a significant reduction from daytime highs with an average low-temperature of 55.2°F (12.9°C) in May.Humidity
May and June, with an average relative humidity of 24%, are the least humid months.Rainfall
May is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.16" (4mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Alto, the average length of the day in May is 13h and 47min.On the first day of May, sunrise is at 5:37 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 7:23 pm MST.
Sunshine
In Alto, the average sunshine in May is 11.9h.UV index
In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What are the least humid months?
What is the average humidity in May?
What is the driest month?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Alto have in May?
What time are sunrise and sunset in May in Alto?
How long on average sun shines in May?
How high is the UV index in May in Alto?
Average temperature in May
Alto, AZ
- Average high temperature in May: 81.3°F
The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (59.2°F).
- Average low temperature in May: 55.2°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).
Average pressure in May
Alto, AZ
- Average pressure in May: 29.85"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in May
Alto, AZ
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in May
Alto, AZ
- Average humidity in May: 24%
The month with the highest relative humidity is August (51%).
The months with the lowest relative humidity are May and June (24%).
Average rainfall in May
Alto, AZ
- Average rainfall in May: 0.16"
The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.16").
Average rainfall days in May
Alto, AZ
- Average rainfall days in May: 1.8 days
The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is May (1.8 days).
Average snowfall in May
Alto, AZ
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Alto, AZ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.8 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
Alto, AZ
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 11h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in May
Alto, 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 (6.6 days).
Average UV index in May
Alto, AZ
- Average UV index in May: 6
The months with the highest UV index are June and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in May
Alto, AZ
- Average cloud cover in May: 7
The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 7).
Average visibility in May
Alto, 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).
Alto, Arizona, USA
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