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
A shift in the average high-temperature is noticeable in May, changing from a mild 55.8°F (13.2°C) in April to a still refreshing 66.2°F (19°C). Harrington's nighttime temperatures in May reflect a stark contrast to the day's highs, falling to an average low of 44.6°F (7°C).Humidity
In Harrington, the average relative humidity in May is 58%.Rainfall
In Harrington, during May, the rain falls for 13.9 days and regularly aggregates up to 1.73" (44mm) of 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 in Harrington, Washington. May is the last month it regularly snows in Harrington. During 0.3 snowfall days, in May, Harrington aggregates 0.08" (2mm) of snow. In Harrington, during the entire year, snow falls for 65.1 days and aggregates up to 37.36" (949mm) of snow.Daylight
In May, the average length of the day in Harrington is 15h and 8min.On the first day of May in Harrington, sunrise is at 5:34 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 4:59 am and sunset at 8:41 pm PDT.
Sunshine
In Harrington, the average sunshine in May is 10.5h.UV index
In Harrington, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Be vigilant - Suggestions to stave off sun damage are provided. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Harrington?
What is the average humidity in May in Harrington?
How much does it rain in Harrington in May?
What is the last month it snows in Harrington?
What is the average length of the day in May in Harrington?
When are sunrise and sunset in May in Harrington?
How long on average sun shines in May in Harrington?
How high is the UV index in May in Harrington?
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).
Average pressure in May
Harrington, WA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
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).
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%).
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").
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).
Average snowfall in May
Harrington, WA
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (10").
The months with the least snowfall are June, July and August (0").
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).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Harrington, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 3min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
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).
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).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
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).
Average visibility in May
Harrington, WA
- Average visibility in May: 6mi
The 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).
Harrington, Washington, USA
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