May weather forecast
Arlington, WA

Large iconic Arlington Memorial Bridge over the vast Potomac River in Washington, mirror images of the iconic Lincoln Memorial
Large iconic Arlington Memorial Bridge over the vast Potomac River in Washington, mirror images of the iconic Lincoln Memorial

Weather in May

The last month of the spring, May, is an enjoyable month in Arlington, Washington, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 61.3°F (16.3°C).

Temperature

In May, the average high-temperature marginally rises, from a cool 53.6°F (12°C) in April, to a comfortable 61.3°F (16.3°C). In Arlington, the average low-temperature is 43.7°F (6.5°C).

Humidity

In Arlington, the average relative humidity 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

The average length of the day in Arlington is 15.2h.

Sunshine

In Arlington, the average sunshine is 9.1h.

UV index

In Arlington, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Arlington?

The average relative humidity in May in Arlington, Washington, is 78%.

How much does it rain in Arlington in May?

In Arlington, in May, it is raining for 14.3 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Arlington?

May through October are months without snowfall in Arlington.

Does it snow in Arlington in May?

In May, in Arlington, Washington, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Arlington?

In Arlington, the average length of the day in May is 15.2h.

How many hours of sunshine does Arlington have in May?

The average sunshine in May in Arlington, Washington, is 9.1h.

What is the UV index intensity in May in Arlington?

The average daily maximum UV index in May in Arlington is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Arlington, WA

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).

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Average pressure in May
Arlington, WA

Average pressure in May - Arlington, WA
  • Average pressure in May: 30.02"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is August (30").

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Average wind speed in May
Arlington, WA

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).

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Average humidity in May
Arlington, WA

Average humidity in May - Arlington, WA
  • Average humidity in May: 78%

Months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).

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Average rainfall in May
Arlington, WA

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").

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Average rainfall days in May
Arlington, WA

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).

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Average snowfall in May
Arlington, WA

Average snowfall in May - Arlington, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (4.45").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Arlington, WA

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Arlington, WA

Average daylight in May / Average sunshine in May - Arlington, WA
  • Average daylight in May: 15.2h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in May: 9.1h

The month with the most sunshine is August (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.1h).

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Average sunshine days in May
Arlington, WA

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).

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Average UV index in May
Arlington, WA

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).
Months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in May
Arlington, WA

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).
Months with the least cloud cover are July and August (Cloud cover 26).

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Average visibility in May
Arlington, WA

Average visibility in May - Arlington, WA
  • Average visibility in May: 6mi

Months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February, November and December (5mi).

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