August weather forecastKelso, WA
August
Weather in August
The last month of the summer, August, is another warm month in Kelso, Washington, with an average temperature fluctuating between 77.9°F (25.5°C) and 49.8°F (9.9°C).Temperature
August is Kelso's warmest month, registering average high temperatures of 77.9°F (25.5°C) and lows of 49.8°F (9.9°C).Humidity
In August, the average relative humidity is 73%.Rainfall
The month with the least rainfall is August, when the rain falls for 6.3 days and typically collects 0.39" (10mm) of precipitation.Snowfall
In Kelso, snow does not fall in April through October.Daylight
In August, the average length of the day is 14h and 6min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:41 pm. On the last day of August, in Kelso, sunrise is at 6:32 am and sunset at 7:51 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 10.4h of sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In August, the average maximum UV index of 4 translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Kelso, WA
- Average high temperature in August: 77.9°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in August: 49.8°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in August
Kelso, WA
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in August
Kelso, WA
- Average wind speed in August: 4mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in August
Kelso, WA
- Average humidity in August: 73%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in August
Kelso, WA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in August
Kelso, WA
- Average rainfall days in August: 6.3 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in August
Kelso, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Kelso, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Kelso, 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: 10h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days in August
Kelso, WA
- Average sunshine days in August: 21.3 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in August
Kelso, WA
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in August
Kelso, WA
- Average cloud cover in August: 36
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in August
Kelso, WA
- Average visibility in August: 5mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
