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
August, with its high-temperature average of 75.4°F (24.1°C) and a low-temperature average of 47.8°F (8.8°C), is the warmest month.Humidity
The months with the lowest humidity in Roslyn are July and August, with an average relative humidity of 60%.Rainfall
In Roslyn, in August, during 5.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, in Roslyn, there are 161.2 rainfall days, and 28.46" (723mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall.Daylight
In Roslyn, the average length of the day in August is 14h and 11min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:36 pm. On the last day of August, in Roslyn, sunrise is at 6:22 am and sunset at 7:45 pm PDT.
Sunshine
With an average of 11.9h of sunshine, August has the most sunshine of the year in Roslyn, Washington.UV index
In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 4 in August transforms into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the warmest month in Roslyn?
What are the temperatures in Roslyn in August?
What is the least humid month in Roslyn?
What is the average humidity in August in Roslyn?
How much does it rain in Roslyn in August?
When it does not snow in Roslyn?
Does it snow in Roslyn in August?
How many hours of daylight does Roslyn have in August?
When is the sunrise / sunset in August in Roslyn?
What month has the most sunshine in Roslyn?
How many hours of sunshine does Roslyn have in August?
What is the UV index reading in August in Roslyn?
Average temperature in August
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, WA
- Average daylight in August: 14h 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 August: 11h and 5min
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
Roslyn, 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
Roslyn, 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
Roslyn, 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
Roslyn, 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).
Roslyn, Washington, USA
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