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
At the onset of August, Coulee Dam records an average high-temperature of a still warm 84.2°F (29°C), showing little deviation from the preceding month. Coulee Dam observes a substantial disparity between daytime high and the average low-temperature of 61.3°F (16.3°C) during August nights.Humidity
The least humid month is August, with an average relative humidity of 36%.Rainfall
The months with the least rainfall are July and August Rain falls for 3.2 days and accumulates 0.2" (5mm) of rain.Snowfall
In Coulee Dam, snow does not fall in May through August.Daylight
In August, the average length of the day is 14h and 14min.On the first day of the month, sunrise is at 5:33 am and sunset at 8:30 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:38 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 12.1h of sunshine.UV index
In Coulee Dam, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: During August, 5 as the daily maximum UV index converts into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in August?
What is the least humid month?
What is the average humidity in August?
What is the driest month?
How much does it rain in August?
When it does not snow?
Does it snow in August?
How many hours of daylight does Coulee Dam have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Coulee Dam have in August?
What is the UV index reading in August?
Average temperature in August
Coulee Dam, WA
- Average high temperature in August: 84.2°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).
- Average low temperature in August: 61.3°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in August
Coulee Dam, WA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in August
Coulee Dam, WA
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in August
Coulee Dam, WA
- Average humidity in August: 36%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).
Average rainfall in August
Coulee Dam, WA
- Average rainfall in August: 0.2"
The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in August
Coulee Dam, WA
- Average rainfall days in August: 3.2 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in August
Coulee Dam, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in August
Coulee Dam, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Coulee Dam, 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 30min).
- Average sunshine in August: 12h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Coulee Dam, WA
- Average sunshine days in August: 25.8 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in August
Coulee Dam, WA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in August
Coulee Dam, WA
- Average cloud cover in August: 12
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in August
Coulee Dam, WA
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Coulee Dam, Washington, USA
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