August weather forecastMarshall, WA
August
Weather in August
The last month of the summer, August, is another warm month in Marshall, Washington, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 59°F (15°C).Temperature
Temperatures reach their maximum during July and August, recording an average high-temperature of 83.7°F (28.7°C).Humidity
The least humid month is August, with an average relative humidity of 38%.Rainfall
August is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.35" (9mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
In August, the average length of the day is 14h and 12min.On the first day of the month, sunrise is at 5:28 am and sunset at 8:23 pm. On the last day of August, sunrise is at 6:08 am and sunset at 7:31 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 12h of sunshine.UV index
In Marshall, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In August, an average UV index of 5 transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Marshall, WA
- Average high temperature in August: 83.7°F
The warmest months (with the highest average high temperature) are July and August (83.7°F).
The month with the lowest average high temperature is December (32.2°F).
- Average low temperature in August: 59°F
The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).
Average pressure in August
Marshall, WA
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in August
Marshall, WA
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in August
Marshall, WA
- Average humidity in August: 38%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).
Average rainfall in August
Marshall, WA
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is March (2.13").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in August
Marshall, WA
- Average rainfall days in August: 5.8 days
The month with the highest number of rainy days is April (16.3 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in August
Marshall, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (10.39").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Marshall, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (15.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Marshall, 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: 12h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in August
Marshall, WA
- Average sunshine days in August: 22.3 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is March (9.8 days).
Average UV index in August
Marshall, 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 February and December (UV index 1).
Average cloud cover in August
Marshall, WA
- Average cloud cover in August: 13
The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in August
Marshall, 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).
