Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The warmest temperatures occur during August, when averages reach a peak of 82.8°F (28.2°C) and a low of 52.3°F (11.3°C).Heat index
The heat index value during August is computed to be 82.4°F (28°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The least humid month is August, with an average relative humidity of 47%.Rainfall
August is the month with the least rainfall. Rain falls for 5.3 days and accumulates 0.31" (8mm) of precipitation.Snowfall
In Keller, Washington, snow does not fall in May through August and October.Daylight
In Keller, the average length of the day in August is 14h and 14min.On the first day of the month, sunrise is at 5:31 am and sunset at 8:30 pm. On the last day of August, in Keller, Washington, sunrise is at 6:12 am and sunset at 7:37 pm PDT.
Sunshine
With an average of 12.1h of sunshine, August has the most sunshine of the year in Keller.UV index
The average daily maximum UV index in August in Keller is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What time of the year is the hottest in Keller?
Is it hot in Keller during August?
What is the least humid month in Keller?
What is the average humidity in August in Keller?
What is the driest month in Keller?
How many days does it rain in August in Keller?
When it does not snow in Keller?
Does it snow in Keller in August?
How many hours of daylight does Keller have in August?
What time are sunrise and sunset in August in Keller?
What month has the most sunshine in Keller?
How many hours of sunshine does Keller have in August?
What is the UV index reading in August in Keller?
Average temperature in August
Keller, WA
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is August (82.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in August: 52.3°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in August
Keller, WA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in August
Keller, WA
- Average wind speed in August: 3.9mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January and December (3.4mph).
Average humidity in August
Keller, WA
- Average humidity in August: 47%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in August
Keller, WA
- Average rainfall in August: 0.31"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in August
Keller, WA
- Average rainfall days in August: 5.3 days
The month with the highest number of rainy days is May (11.3 days).
The months with the least rainy days are February and September (5 days).
Average snowfall in August
Keller, WA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in August
Keller, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Keller, WA
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 12h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Keller, WA
- Average sunshine days in August: 22.8 days
The month with the most sunshine days is September (23.8 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in August
Keller, 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 1).
Average cloud cover in August
Keller, WA
- Average cloud cover in August: 13
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in August
Keller, WA
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (2mi).
Keller, Washington, USA
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