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 shift into May brings an increase in the average high-temperature, moving from a frosty 46.2°F (7.9°C) in April to a mild 57.7°F (14.3°C). Throughout the month of May, South Cle Elum reports a steady low-temperature average of 37.4°F (3°C).Humidity
The average relative humidity in May in South Cle Elum is 72%.Rainfall
In South Cle Elum, during May, the rain falls for 16.1 days and regularly aggregates up to 1.81" (46mm) of precipitation. 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 in South Cle Elum. During 0.3 snowfall days, in May, South Cle Elum aggregates 0.04" (1mm) of snow. In South Cle Elum, during the entire year, snow falls for 69.9 days and aggregates up to 60.24" (1530mm) of snow.Daylight
The average length of the day in May is 15h and 7min.On the first day of May, sunrise is at 5:46 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:11 am and sunset at 8:51 pm PDT.
Sunshine
In South Cle Elum, the average sunshine in May is 10.3h.UV index
In South Cle Elum, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What is the temperature in May in South Cle Elum?
What is the average humidity in May in South Cle Elum?
How much does it rain in South Cle Elum in May?
What is the last month it snows in South Cle Elum?
What is the average length of the day in May in South Cle Elum?
When is the sunrise / sunset in May in South Cle Elum?
How many hours of sunshine does South Cle Elum have in May?
What is the UV index intensity in May in South Cle Elum?
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 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 36min).
- Average sunshine in May: 10h and 2min
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).
South Cle Elum, Washington, USA
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