July weather forecastArrington, VA
July
Weather in July
July, the same as June, is another warm summer month in Arrington, Virginia, with an average temperature fluctuating between 85.8°F (29.9°C) and 64°F (17.8°C).Temperature
The month of July, characterized by an average high of 85.8°F (29.9°C) and a low of 64°F (17.8°C), is recognized as the warmest.Heat index
July's heat index is estimated at a torrid 95°F (35°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Consider that heat index readings are for situations in the shade and light wind. 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 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
July is the least humid month, with an average relative humidity of 72%.Rainfall
In July, in Arrington, the rain falls for 15 days. Throughout July, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 158.7 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
In Arrington, snow does not fall in May through September.Daylight
In Arrington, the average length of the day in July is 14h and 28min.On the first day of July in Arrington, Virginia, sunrise is at 5:58 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:24 pm EDT.
Sunshine
With an average of 10.7h of sunshine, July has the most sunshine of the year in Arrington.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 during July leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Arrington, VA
- Average high temperature in July: 85.8°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (40.8°F).
- Average low temperature in July: 64°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in July
Arrington, VA
- Average pressure in July: 29.99"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in July
Arrington, VA
- Average wind speed in July: 4.4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in July
Arrington, VA
- Average humidity in July: 72%
The months with the highest relative humidity are May, September, October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in July
Arrington, VA
- Average rainfall in July: 2.28"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in July
Arrington, VA
- Average rainfall days in July: 15 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in July
Arrington, VA
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Arrington, VA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Arrington, VA
- Average daylight in July: 14h and 30min
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 July: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in July
Arrington, VA
- Average sunshine days in July: 15.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in July
Arrington, VA
- Average UV index in July: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Arrington, VA
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in July
Arrington, VA
- Average visibility in July: 6mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
