August weather forecastSultan, WA
August
Weather in August
August, the last month of the summer in Sultan, is a moderately hot month, with an average temperature ranging between min 48°F (8.9°C) and max 73.4°F (23°C).Temperature
August is the warmest month, with the temperature often reaching an average high of 73.4°F (23°C) and an average low of 48°F (8.9°C).Humidity
In August, the average relative humidity is 73%.Rainfall
August is the month with the least rainfall in Sultan. Rain falls for 7.9 days and accumulates 0.79" (20mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August is 14h and 13min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:41 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:49 pm PDT.
Sunshine
With an average of 10.4h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In August, a regular UV index of 4 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sultan, WA
- Average high temperature in August: 73.4°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in August: 48°F
The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in August
Sultan, WA
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in August
Sultan, WA
- Average wind speed in August: 3.2mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in August
Sultan, WA
- Average humidity in August: 73%
The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in August
Sultan, WA
- Average rainfall in August: 0.79"
The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").
Average rainfall days in August
Sultan, WA
- Average rainfall days in August: 7.9 days
The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).
Average snowfall in August
Sultan, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Sultan, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Sultan, 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 30min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in August
Sultan, WA
- Average sunshine days in August: 19.9 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).
Average UV index in August
Sultan, 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, March, April, October, November and December (UV index 2).
Average cloud cover in August
Sultan, WA
- Average cloud cover in August: 30
The months with the most cloud cover are March and December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Sultan, WA
- Average visibility in August: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
