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 arrival of May brings a temperature shift, with the average high-temperature escalating from a chilly 47.8°F (8.8°C) in April to a mild 59.9°F (15.5°C). May nights are characterized by a significant departure from the daytime highs, dropping to an average temperature of 37.9°F (3.3°C).Humidity
The average relative humidity in May is 70%.Rainfall
In May, the rain falls for 15.3 days. Throughout May, 1.65" (42mm) of precipitation is accumulated. In Chiwaukum, during the entire year, the rain falls for 159.9 days and collects up to 25.63" (651mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Chiwaukum aggregates 0.04" (1mm) of snow. In Chiwaukum, during the entire year, snow falls for 73.4 days and aggregates up to 57.99" (1473mm) of snow.Daylight
In Chiwaukum, the average length of the day in May is 15h and 10min.On the first day of May, sunrise is at 5:43 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:52 pm PDT.
Sunshine
In May, the average sunshine is 10.7h.UV index
In Chiwaukum, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Chiwaukum in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Chiwaukum, WA
- Average high temperature in May: 59.9°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (30.6°F).
- Average low temperature in May: 37.9°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in May
Chiwaukum, WA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in May
Chiwaukum, WA
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in May
Chiwaukum, WA
- Average humidity in May: 70%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (56%).
Average rainfall in May
Chiwaukum, WA
- Average rainfall in May: 1.65"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
Chiwaukum, WA
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in May
Chiwaukum, WA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Chiwaukum, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (17 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Chiwaukum, 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 4min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Chiwaukum, WA
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in May
Chiwaukum, 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 and February (UV index 1).
Average cloud cover in May
Chiwaukum, WA
- Average cloud cover in May: 33
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in May
Chiwaukum, WA
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
Chiwaukum, Washington, USA
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