August weather forecastLa Grande, WA
August
Weather in August
The last month of the summer, August, is another warm month in La Grande, Washington, with an average temperature fluctuating between 75°F (23.9°C) and 49.5°F (9.7°C).Temperature
La Grande's August weather, marked by an average high temperature of 75°F (23.9°C) and an average low temperature of 49.5°F (9.7°C), is the warmest in the year.Humidity
In August, the average relative humidity is 71%.Rainfall
In August, the rain falls for 6.1 days. Throughout August, 0.59" (15mm) of precipitation is accumulated. In La Grande, during the entire year, the rain falls for 182.2 days and collects up to 37.83" (961mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August is 14h and 9min.On the first day of August in La Grande, sunrise is at 5:50 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:49 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 10.9h of sunshine.UV index
In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during August translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
La Grande, WA
- Average high temperature in August: 75°F
The warmest month (with the highest average high temperature) is August (75°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in August: 49.5°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in August
La Grande, WA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in August
La Grande, WA
- Average wind speed in August: 3.6mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in August
La Grande, WA
- Average humidity in August: 71%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (70%).
Average rainfall in August
La Grande, WA
- Average rainfall in August: 0.59"
The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in August
La Grande, WA
- Average rainfall days in August: 6.1 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in August
La Grande, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
La Grande, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in August /
Average sunshine in August
La Grande, WA
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in August: 10h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in August
La Grande, WA
- Average sunshine days in August: 22.9 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (8 days).
Average UV index in August
La Grande, WA
- Average UV index in August: 4
The month with the highest UV index is 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
La Grande, WA
- Average cloud cover in August: 27
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
La Grande, WA
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
