August weather forecastUnion, WA
August
Weather in August
August, the last month of the summer in Union, is another warm month, with an average temperature fluctuating between 50.4°F (10.2°C) and 76.6°F (24.8°C).Temperature
August is the month when Union's temperatures reach their peak, with averages of 76.6°F (24.8°C) and lows of 50.4°F (10.2°C).Humidity
In August, the average relative humidity in Union is 73%.Rainfall
In Union, in August, it is raining for 6.3 days, with typically 0.63" (16mm) of accumulated precipitation. In Union, during the entire year, the rain falls for 185.4 days and collects up to 42.87" (1089mm) of precipitation.Snowfall
In Union, Washington, snow does not fall in April through October.Daylight
The average length of the day in August is 14h and 11min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:45 pm. On the last day of August, in Union, sunrise is at 6:31 am and sunset at 7:53 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 10.7h of sunshine.UV index
In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during August leads to these instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Union, WA
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in August: 50.4°F
The month with the highest average low temperature is August (50.4°F).
The coldest month (with the lowest average low temperature) is February (32.7°F).
Average pressure in August
Union, WA
- Average pressure in August: 30.03"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in August
Union, WA
- Average wind speed in August: 3.5mph
The windiest month (with the highest average wind speed) is March (4.3mph).
The calmest month (with the lowest average wind speed) is September (3.4mph).
Average humidity in August
Union, WA
- Average humidity in August: 73%
The months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is July (72%).
Average rainfall in August
Union, WA
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is January (7.24").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in August
Union, WA
- Average rainfall days in August: 6.3 days
The month with the highest number of rainy days is March (21.4 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in August
Union, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Union, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (3.3 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
Union, WA
- Average daylight in August: 14h and 12min
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 30min).
- Average sunshine in August: 10h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in August
Union, WA
- Average sunshine days in August: 21.6 days
The month with the most sunshine days is July (21.7 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in August
Union, 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
Union, WA
- Average cloud cover in August: 30
The months with the most cloud cover are January and December (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in August
Union, WA
- Average visibility in August: 5mi
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (4mi).
