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 tends to be the warmest month, with temperatures averaging a daily high of 73°F (22.8°C) and a low of 52.5°F (11.4°C).Humidity
The average relative humidity in August is 74%.Rainfall
In August, the rain falls for 6.1 days. Throughout August, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 179.1 rainfall days, and 29.57" (751mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August is 14h and 14min.On the first day of August, sunrise is at 5:46 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:51 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 10.6h of sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, an average UV index of 4 transforms into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
What is the temperature in August?
What is the average humidity in August in John Sam Lake?
How much does it rain in August?
When it does not snow?
How many hours of daylight does John Sam Lake have in August?
When are sunrise and sunset in August?
What month has the most sunshine?
How many hours of sunshine does John Sam Lake have in August?
What is the UV index intensity in August?
Average temperature in August
John Sam Lake, WA
- Average high temperature in August: 73°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in August: 52.5°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in August
John Sam Lake, WA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in August
John Sam Lake, WA
- Average wind speed in August: 3.5mph
The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in August
John Sam Lake, WA
- Average humidity in August: 74%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in August
John Sam Lake, WA
- Average rainfall in August: 0.51"
The wettest month (with the highest rainfall) is November (4.06").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in August
John Sam Lake, WA
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in August
John Sam Lake, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
John Sam Lake, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (3.1 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
John Sam Lake, WA
- Average daylight in August: 14h and 1min
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: 10h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in August
John Sam Lake, WA
- Average sunshine days in August: 23.1 days
The month with the most sunshine days is August (23.1 days).
The months with the least sunshine days are February and November (8.6 days).
Average UV index in August
John Sam Lake, WA
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
John Sam Lake, WA
- Average cloud cover in August: 26
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in August
John Sam Lake, WA
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
John Sam Lake, Washington, USA
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