May weather forecast and climate
Harrington, WA

Weather in May

May, the last month of the spring, in Harrington, is an enjoyable month, with average temperature varying between 44.6°F (7°C) and 66.2°F (19°C).

Temperature

In May, the average high-temperature rises, from a mild 55.8°F (13.2°C) in April, to an enjoyable 66.2°F (19°C). In Harrington, the average low-temperature is 44.6°F (7°C).

Humidity

In May, the average relative humidity in Harrington is 58%.

Rainfall

In Harrington, it is raining for 13.9 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Harrington, there are 127.9 rainfall days, and 15.71" (399mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, Harrington aggregates 0.08" (2mm) of snow. Throughout the year, in Harrington, Washington, there are 65.1 snowfall days, and 37.36" (949mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15.1h.

Sunshine

The average sunshine in May is 10.5h.

UV index

In Harrington, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Harrington?

In Harrington, Washington, the average relative humidity in May is 58%.

How much does it rain in Harrington in May?

In Harrington, Washington, during May, the rain falls for 13.9 days and regularly aggregates up to 1.73" (44mm) of precipitation.

What is the last month it snows in Harrington?

May is the last month it regularly snows in Harrington, Washington. During 0.3 snowfall days, in May, Harrington aggregates 0.08" (2mm) of snow.

How many hours of daylight does Harrington have in May?

In Harrington, the average length of the day in May is 15.1h.

How long on average sun shines in May in Harrington?

In May, the average sunshine is 10.5h.

What is the UV index reading in May in Harrington?

In Harrington, Washington, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in May
Harrington, WA

Average temperature in May - Harrington, WA
  • Average high temperature in May: 66.2°F

The warmest months (with the highest average high temperature) are July and August (83.3°F).
The month with the lowest average high temperature is December (31.5°F).

  • Average low temperature in May: 44.6°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

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Average pressure in May
Harrington, WA

Average pressure in May - Harrington, WA
  • Average pressure in May: 29.94"

The month with the highest atmospheric pressure is January (30.19").
The month with the lowest atmospheric pressure is August (29.9").

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Average wind speed in May
Harrington, WA

Average wind speed in May - Harrington, WA
  • Average wind speed in May: 7.3mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in May
Harrington, WA

Average humidity in May - Harrington, WA
  • Average humidity in May: 58%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in May
Harrington, WA

Average rainfall in May - Harrington, WA
  • Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.31").

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Average rainfall days in May
Harrington, WA

Average rainfall days in May - Harrington, WA
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (5.2 days).

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Average snowfall in May
Harrington, WA

Average snowfall in May - Harrington, WA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (10").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Harrington, WA

Average snowfall days in May - Harrington, WA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (15.9 days).
Months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Harrington, WA
  • Average daylight in May: 15.1h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in May: 10.5h

The month with the most sunshine is August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 4.1h).

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Average sunshine days in May
Harrington, WA

Average sunshine days in May - Harrington, WA
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (10.2 days).

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Average UV index in May
Harrington, WA

Average UV index in May - Harrington, WA
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in May
Harrington, WA

Average cloud cover in May - Harrington, WA
  • Average cloud cover in May: 32

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 12).

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Average visibility in May
Harrington, WA

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

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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