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
The onset of May introduces a subtle rise in the average high-temperature, nudging from a cool 53.6°F (12°C) in April to a comfortable 61.3°F (16.3°C). May's nights observe an average temperature of 43.7°F (6.5°C).Humidity
In Arlington, the average relative humidity in May is 78%.Rainfall
In Arlington, in May, it is raining for 14.3 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 188.6 rainfall days, and 34.92" (887mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 15h and 14min.On the first day of May, sunrise is at 5:48 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 9:00 pm PDT.
Sunshine
In May, the average sunshine is 9.1h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May in Arlington?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Arlington have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May in Arlington?
What is the UV index intensity in May?
Average temperature in May
Arlington, WA
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (41.7°F).
- Average low temperature in May: 43.7°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is February (33.8°F).
Average pressure in May
Arlington, WA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
Arlington, WA
- Average wind speed in May: 3.9mph
The windiest months (with the highest average wind speed) are January and November (5.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in May
Arlington, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Arlington, WA
- Average rainfall in May: 2.05"
The wettest month (with the highest rainfall) is November (4.92").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in May
Arlington, WA
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall in May
Arlington, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Arlington, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Arlington, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in May
Arlington, WA
- Average sunshine days in May: 14.1 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (8.1 days).
Average UV index in May
Arlington, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Arlington, WA
- Average cloud cover in May: 42
The month with the most cloud cover is December (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in May
Arlington, WA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Arlington, Washington, USA
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