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 start of May brings a shift in the average high-temperature, increasing from April's cool 51.6°F (10.9°C) to an enjoyable 64°F (17.8°C). Onion Creek documents a marked decrease from day to night, with an average low of 38.1°F (3.4°C) throughout May.Humidity
The average relative humidity in May in Onion Creek, Washington, is 65%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.4 days and typically aggregates up to 1.93" (49mm) of precipitation.Snowfall
In Onion Creek, snow does not fall in May through August.Daylight
In Onion Creek, the average length of the day in May is 15h and 18min.On the first day of May in Onion Creek, sunrise is at 5:29 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 4:52 am and sunset at 8:45 pm PDT.
Sunshine
In May, the average sunshine in Onion Creek, Washington, is 10.7h.UV index
In May, the average daily maximum UV index in Onion Creek is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Onion Creek?
What is the average humidity in May in Onion Creek?
What is the rainiest month in Onion Creek?
How many days does it rain in May in Onion Creek?
When it does not snow in Onion Creek?
Does it snow in Onion Creek in May?
How many hours of daylight does Onion Creek have in May?
What time are sunrise and sunset in May in Onion Creek?
How many hours of sunshine does Onion Creek have in May?
How high is the UV index in May in Onion Creek?
Average temperature in May
Onion Creek, WA
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in May: 38.1°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in May
Onion Creek, WA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in May
Onion Creek, WA
- Average wind speed in May: 3.7mph
The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).
Average humidity in May
Onion Creek, WA
- Average humidity in May: 65%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
Onion Creek, WA
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in May
Onion Creek, WA
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in May
Onion Creek, WA
- Average snowfall in May: 0"
The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in May
Onion Creek, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Onion Creek, WA
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Onion Creek, WA
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).
Average UV index in May
Onion Creek, WA
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Onion Creek, WA
- Average cloud cover in May: 33
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in May
Onion Creek, WA
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Onion Creek, Washington, USA
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