August weather forecastValley, WA
August
Weather in August
The last month of the summer, August, is another warm month in Valley, Washington, with an average temperature varying between 83.1°F (28.4°C) and 51.8°F (11°C).Temperature
August, recognised by an average high temperature of 83.1°F (28.4°C) and a low of 51.8°F (11°C), is Valley's warmest month.Heat index
The average heat index in August is evaluated at 84.2°F (29°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
With an average relative humidity of 47%, August is the least humid month.Rainfall
August is the month with the least rainfall in Valley. Rain falls for 5.6 days and accumulates 0.35" (9mm) of precipitation.Snowfall
May through August are months without snowfall.Daylight
In August, the average length of the day in Valley, Washington, is 14h and 15min.On the first day of August in Valley, sunrise is at 5:27 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 7:33 pm PDT.
Sunshine
The month with the most sunshine in Valley, Washington, is August, with an average of 12h of sunshine.UV index
In August, the average daily maximum UV index in Valley is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 during August translates into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Valley, WA
- Average high temperature in August: 83.1°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in August: 51.8°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in August
Valley, WA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in August
Valley, WA
- Average wind speed in August: 3.9mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).
Average humidity in August
Valley, WA
- Average humidity in August: 47%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in August
Valley, WA
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is January (2.2").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in August
Valley, WA
- Average rainfall days in August: 5.6 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in August
Valley, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (10.47").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in August
Valley, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (15.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Valley, WA
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 12h and 0min
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 36min).
Average sunshine days in August
Valley, WA
- Average sunshine days in August: 22.9 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is March (9.3 days).
Average UV index in August
Valley, WA
- Average UV index in August: 5
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 August
Valley, WA
- Average cloud cover in August: 13
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in August
Valley, WA
- Average visibility in August: 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 and February (3mi).
