May weather forecastSouth Cle Elum, WA
May
Weather in May
May, the last month of the spring in South Cle Elum, is a refreshing month, with an average temperature varying between 37.4°F (3°C) and 57.7°F (14.3°C).Temperature
In South Cle Elum, stepping into May brings a temperature increase, moving up from April's frosty 46.2°F (7.9°C) to a moderate 57.7°F (14.3°C). South Cle Elum, during the nights of May, experiences an average temperature drop to a wintry 37.4°F (3°C).Humidity
The average relative humidity in May in South Cle Elum is 72%.Rainfall
In South Cle Elum, in May, during 16.1 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, there are 161.2 rainfall days, and 28.46" (723mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, South Cle Elum aggregates 0.04" (1mm) of snow. Throughout the year, there are 69.9 snowfall days, and 60.24" (1530mm) of snow is accumulated.Daylight
The average length of the day in May is 15h and 7min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:11 am and sunset at 8:51 pm PDT.
Sunshine
The average sunshine in May in South Cle Elum is 10.3h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Cle Elum, WA
- Average high temperature in May: 57.7°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 37.4°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in May
South Cle Elum, WA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
South Cle Elum, WA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in May
South Cle Elum, WA
- Average humidity in May: 72%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in May
South Cle Elum, WA
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is January (4.41").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in May
South Cle Elum, WA
- Average rainfall days in May: 16.1 days
The months with the highest number of rainy days are March and April (18.3 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in May
South Cle Elum, WA
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (16.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
South Cle Elum, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
South Cle Elum, 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 36min).
- Average sunshine in May: 10h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
South Cle Elum, WA
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in May
South Cle Elum, WA
- Average UV index in May: 4
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
South Cle Elum, WA
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in May
South Cle Elum, 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 (3mi).
