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
As May arrives, a slight rise in the average high-temperature is observed, moving from a mild 57.2°F (14°C) in April to a comfortable 66°F (18.9°C). With a notable disparity from daily peak temperatures, the average low-temperature settles at a cold 39.2°F (4°C) throughout May.Humidity
In May, the average relative humidity is 72%.Rainfall
In Phoenix, during May, the rain falls for 12.2 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Phoenix, during the entire year, the rain falls for 130.2 days and collects up to 19.17" (487mm) of precipitation.Snowfall
In Phoenix, snow does not fall in May through October.Daylight
In Phoenix, the average length of the day in May is 14h and 37min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:11 pm. On the last day of May, in Phoenix, sunrise is at 5:37 am and sunset at 8:40 pm PDT.
Sunshine
In Phoenix, the average sunshine in May is 10.5h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, a regular UV index of 4 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Phoenix have in May?
What is the UV index intensity in May?
Average temperature in May
Phoenix, OR
- Average high temperature in May: 66°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in May: 39.2°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (29.3°F).
Average pressure in May
Phoenix, OR
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in May
Phoenix, OR
- Average wind speed in May: 3.9mph
The windiest months (with the highest average wind speed) are January and March (4.2mph).
The calmest months (with the lowest average wind speed) are August, September and October (3.4mph).
Average humidity in May
Phoenix, OR
- Average humidity in May: 72%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (59%).
Average rainfall in May
Phoenix, OR
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in May
Phoenix, OR
- Average rainfall days in May: 12.2 days
The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (3.7 days).
Average snowfall in May
Phoenix, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Phoenix, OR
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Phoenix, OR
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 10h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Phoenix, OR
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in May
Phoenix, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Phoenix, OR
- Average cloud cover in May: 36
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in May
Phoenix, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Phoenix, Oregon, USA
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