August weather forecastWalnut Grove, WA
August
Weather in August
August, the last month of the summer in Walnut Grove, is also a moderately hot month, with an average temperature ranging between max 80.6°F (27°C) and min 54°F (12.2°C).Temperature
Walnut Grove's warmest temperatures are experienced in August, with average high temperatures of 80.6°F (27°C) and lows of 54°F (12.2°C).Heat index
The heat index value for August is calculated to be 82.4°F (28°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
August is the least humid month in Walnut Grove, with an average relative humidity of 65%.Rainfall
In August, the rain falls for 4.9 days. Throughout August, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Walnut Grove, there are 177.1 rainfall days, and 34.29" (871mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Walnut Grove.Daylight
The average length of the day in August is 14h and 4min.On the first day of August, sunrise is at 5:54 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:49 pm PDT.
Sunshine
With an average of 11h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Walnut Grove, WA
- Average high temperature in August: 80.6°F
The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in August: 54°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34°F).
Average pressure in August
Walnut Grove, WA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in August
Walnut Grove, WA
- Average wind speed in August: 3.8mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in August
Walnut Grove, WA
- Average humidity in August: 65%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (65%).
Average rainfall in August
Walnut Grove, WA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is December (5.08").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in August
Walnut Grove, WA
- Average rainfall days in August: 4.9 days
The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.9 days).
Average snowfall in August
Walnut Grove, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Walnut Grove, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.1 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
Walnut Grove, WA
- Average daylight in August: 14h and 6min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 11h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and February (Average sunshine: 4h and 6min).
Average sunshine days in August
Walnut Grove, WA
- Average sunshine days in August: 23.8 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in August
Walnut Grove, WA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Walnut Grove, WA
- Average cloud cover in August: 23
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in August
Walnut Grove, WA
- Average visibility in August: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
