May weather forecastSnoqualmie Pass, WA
May
Weather in May
May in Snoqualmie Pass marks a noticeable departure from the colder months as spring gets into full swing. The weather shift is evident where nature comes alive, and outdoor activities gain traction. As temperatures rise, the snowfall finally takes a back seat, replaced by rainfall. The air begins to dry out, providing a much-needed respite from the humid winters. The residents finally bid adieu to winter and welcome the blossoming spring color that adorned Snoqualmie.Temperature
May's onset brings a temperature rise, moving from a chilly 43.7°F (6.5°C) in April to a cool 54.7°F (12.6°C). Snoqualmie Pass witnesses a consistent average low-temperature of 36.1°F (2.3°C) throughout May.Humidity
In May, the average relative humidity is 80%.Rainfall
In Snoqualmie Pass, during May, the rain falls for 15.7 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Snoqualmie Pass, during the entire year, the rain falls for 127.9 days and collects up to 28.58" (726mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Snoqualmie Pass, in May, during 6.4 snowfall days, 2.8" (71mm) of snow is typically accumulated. In Snoqualmie Pass, Washington, during the entire year, snow falls for 135.3 days and aggregates up to 134.33" (3412mm) of snow.Daylight
In Snoqualmie Pass, the average length of the day in May is 15h and 8min.On the first day of May, sunrise is at 5:47 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:54 pm PDT.
Sunshine
In May, the average sunshine in Snoqualmie Pass is 8.4h.UV index
In Snoqualmie Pass, the average daily maximum UV index in May is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 3 during May, leads to the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Snoqualmie Pass, WA
- Average high temperature in May: 54.7°F
The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (30.2°F).
- Average low temperature in May: 36.1°F
The month with the highest average low temperature is August (45°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).
Average pressure in May
Snoqualmie Pass, WA
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in May
Snoqualmie Pass, WA
- Average wind speed in May: 4.4mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in May
Snoqualmie Pass, WA
- Average humidity in May: 80%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Snoqualmie Pass, WA
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is January (4.21").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in May
Snoqualmie Pass, WA
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in May
Snoqualmie Pass, WA
- Average snowfall in May: 2.8"
The month with the highest snowfall is January (27.72").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Snoqualmie Pass, WA
- Average snowfall days in May: 6.4 days
The month with the highest number of snowfall days is December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Snoqualmie Pass, WA
- Average daylight in May: 15h and 6min
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: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 0min).
Average sunshine days in May
Snoqualmie Pass, WA
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is August (20.2 days).
The month with the least sunshine days is February (6 days).
Average UV index in May
Snoqualmie Pass, WA
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Snoqualmie Pass, WA
- Average cloud cover in May: 53
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Snoqualmie Pass, WA
- Average visibility in May: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March and December (3mi).
