August weather forecastKeller, VA
August
Weather in August
The last month of the summer, August, is another warm month in Keller, Virginia, with temperature in the range of an average low of 75.4°F (24.1°C) and an average high of 80.8°F (27.1°C).Temperature
The arrival of August is marked by an average high-temperature of a still warm 80.8°F (27.1°C), bearing a close resemblance to July. Keller's nighttime temperature in August experiences a slight dip from daytime highs, falling to an average of 75.4°F (24.1°C).Heat index
The heat index value for August is estimated at a hot 86°F (30°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The average relative humidity in August is 76%.Rainfall
August is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.27" (83mm) of precipitation.Snowfall
In Keller, snow does not fall in April through November.Daylight
In August, the average length of the day is 13h and 34min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:33 pm EDT.
Sunshine
The average sunshine in August is 10.8h.UV index
July and August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 7 in August translates into the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Keller, VA
- Average high temperature in August: 80.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in August: 75.4°F
The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in August
Keller, VA
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Keller, VA
- Average wind speed in August: 9.5mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is August (9.5mph).
Average humidity in August
Keller, VA
- Average humidity in August: 76%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in August
Keller, VA
- Average rainfall in August: 3.27"
The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is November (1.54").
Average rainfall days in August
Keller, VA
- Average rainfall days in August: 17.4 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in August
Keller, VA
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Keller, VA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (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
Keller, VA
- Average daylight in August: 13h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 10h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in August
Keller, VA
- Average sunshine days in August: 11 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in August
Keller, VA
- Average UV index in August: 7
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in August
Keller, VA
- Average cloud cover in August: 26
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in August
Keller, VA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
