August weather forecastCle Elum, WA

August
Weather in August
Being akin to July, August continues to treat Cle Elum with summertime heat and sunshine. The city continues to bask in the sun's glow, with infrequent showers that provide the much-needed respite. Lengthy daylight and warm temperatures are an open invitation to explore the city and its attractions. Just when the heat seems to linger, the cool wind sets the perfect balance. The high pressure, bright sun, and low humidity are perfect for outdoor festivities and activities.Temperature
August is the warmest month in Cle Elum, exhibiting average temperatures of 75.4°F (24.1°C) at the peak and 47.8°F (8.8°C) at the base.Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 60%.Rainfall
In Cle Elum, Washington, in August, it is raining for 5.5 days, with typically 0.51" (13mm) of accumulated precipitation. In Cle Elum, during the entire year, the rain falls for 161.2 days and collects up to 28.46" (723mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In August, the average length of the day is 14h and 10min.On the first day of August, sunrise is at 5:43 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:44 pm PDT.
Sunshine
The month with the most sunshine in Cle Elum is August, with an average of 11.9h of sunshine.UV index
In Cle Elum, Washington, the average daily maximum UV index in August 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 the average person.Note: The UV index of 4 in August translates into these instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Cle Elum, WA
- Average high temperature in August: 75.4°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 August: 47.8°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 August
Cle Elum, WA
- Average pressure in August: 29.96"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 August
Cle Elum, WA
- Average wind speed in August: 6.1mph
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 August
Cle Elum, WA
- Average humidity in August: 60%
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 August
Cle Elum, WA
- Average rainfall in August: 0.51"
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 August
Cle Elum, WA
- Average rainfall days in August: 5.5 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 August
Cle Elum, WA
- Average snowfall in August: 0"
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 August
Cle Elum, WA
- Average snowfall days in August: 0 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 August /
Average sunshine in August
Cle Elum, WA
- Average daylight in August: 14h and 12min
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 August: 11h and 54min
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 August
Cle Elum, WA
- Average sunshine days in August: 22.8 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 August
Cle Elum, WA
- Average UV index in August: 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 August
Cle Elum, WA
- Average cloud cover in August: 18
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 August
Cle Elum, WA
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).





