August weather forecastUnderwood Heights, WA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Underwood Heights, Washington, with an average temperature ranging between max 78.4°F (25.8°C) and min 51.4°F (10.8°C).Temperature
The average temperatures reach their apex in August, averaging 78.4°F (25.8°C) at the high end and 51.4°F (10.8°C) at the low end.Humidity
In Underwood Heights, the average relative humidity in August is 60%.Rainfall
In August, the rain falls for 4.2 days. Throughout August, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Underwood Heights, there are 159.7 rainfall days, and 31.42" (798mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in August in Underwood Heights, Washington, is 14h and 4min.On the first day of August, sunrise is at 5:50 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:45 pm PDT.
Sunshine
In Underwood Heights, Washington, the average sunshine in August is 11.6h.UV index
The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 4 in August translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Underwood Heights, WA
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in August: 51.4°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in August
Underwood Heights, WA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in August
Underwood Heights, WA
- Average wind speed in August: 5.4mph
The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in August
Underwood Heights, WA
- Average humidity in August: 60%
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is July (59%).
Average rainfall in August
Underwood Heights, WA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is January (5.67").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in August
Underwood Heights, WA
- Average rainfall days in August: 4.2 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in August
Underwood Heights, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Underwood Heights, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (4.1 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
Underwood Heights, WA
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 11h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Underwood Heights, WA
- Average sunshine days in August: 24.4 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (8.4 days).
Average UV index in August
Underwood Heights, WA
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in August
Underwood Heights, WA
- Average cloud cover in August: 17
The months with the most cloud cover are January and February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in August
Underwood Heights, WA
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
