Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The advent of August brings an average high-temperature of a still hot 86.2°F (30.1°C), exhibiting minor difference from the previous month. Sunnyside records a significant temperature drop in August nights, lowering to an average of 61.5°F (16.4°C).Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 38%.Rainfall
In August, the rain falls for 4.4 days. Throughout August, 0.31" (8mm) of precipitation is accumulated. In Sunnyside, during the entire year, the rain falls for 104.5 days and collects up to 8.23" (209mm) of precipitation.Snowfall
In Sunnyside, snow does not fall in April through August and October.Daylight
In Sunnyside, the average length of the day in August is 14h and 7min.On the first day of the month, sunrise is at 5:42 am and sunset at 8:30 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:39 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 12h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 6 in August translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August?
What are the least humid months?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
Does it snow in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
What is the month with the most sunshine?
How many hours of sunshine does Sunnyside have in August?
When is the highest UV index?
How high is the UV index in August?
Average temperature in August
Sunnyside, WA
- Average high temperature in August: 86.2°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).
Average pressure in August
Sunnyside, WA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in August
Sunnyside, WA
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity in August
Sunnyside, WA
- Average humidity in August: 38%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in August
Sunnyside, WA
- Average rainfall in August: 0.31"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in August
Sunnyside, WA
- Average rainfall days in August: 4.4 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in August
Sunnyside, WA
- Average snowfall in August: 0"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in August
Sunnyside, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in August /
Average sunshine in August
Sunnyside, WA
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in August
Sunnyside, WA
- Average sunshine days in August: 24 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in August
Sunnyside, WA
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Sunnyside, WA
- Average cloud cover in August: 11
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in August
Sunnyside, WA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Sunnyside, Washington, USA
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