August weather forecastWalla Walla, WA
August
Weather in August
August paves the way for hot and dry summer weather with consistent high temperatures akin to July’s 84.6°F (29.2°C). The city relishes in glorious sunny days, marked by minimal clouds and wide blue skies. While vegetation flourishes thanks to accumulated spring rainfall, August's own rainfall is notably minimal. The reduced cloud cover is a testament to the uninterrupted sunshine that makes this month particularly bathed in warmth. By the end of the month, hints of fall start to creep in as the day length subtly begins to decrease.Temperature
August ushers in an average high-temperature of a still moderately hot 84.6°F (29.2°C) in Walla, aligning closely with the preceding month. Walla records a marked daily temperature contrast, with an average low-temperature of 60.8°F (16°C) during the nights of August.Humidity
August is the least humid month, with an average relative humidity of 39%.Rainfall
In Walla, during August, the rain falls for 5.6 days and regularly aggregates up to 0.39" (10mm) of precipitation. Throughout the year, there are 141.7 rainfall days, and 15.12" (384mm) of precipitation is accumulated.Snowfall
In Walla, snow does not fall in May through August and October.Daylight
The average length of the day in August in Walla is 14h and 5min.On the first day of August, sunrise is at 5:36 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:32 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 12.1h of sunshine.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In August, a regular UV index of 5 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Walla Walla, WA
- Average high temperature in August: 84.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in August: 60.8°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in August
Walla Walla, WA
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in August
Walla Walla, WA
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in August
Walla Walla, WA
- Average humidity in August: 39%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in August
Walla Walla, WA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in August
Walla Walla, WA
- Average rainfall days in August: 5.6 days
The month with the highest number of rainy days is March (17.4 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in August
Walla Walla, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in August
Walla Walla, WA
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are February and December (6.1 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Walla Walla, 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: 12h and 6min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in August
Walla Walla, WA
- Average sunshine days in August: 21.8 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is February (10 days).
Average UV index in August
Walla Walla, WA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Walla Walla, WA
- Average cloud cover in August: 10
The months with the most cloud cover are January, February and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in August
Walla Walla, WA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
