June weather forecastAshburn, VA
June
Weather in June
Summer arrives in full swing in June, showcasing a different facet of Ashburn's weather. Temperatures continue to rise from May to July, and quantity of daylight hours increases to the highest level. June also marks the point in the year with the highest hours of sunshine at 10.1 hours, illuminating the city for longer periods. However, the number of rainfall days falls slightly, providing a drier, brighter outlook overall.Temperature
Ashburn's transition into June brings a slight rise in the average high-temperature, moving from a warm 75°F (23.9°C) in May to a still moderately hot 82.8°F (28.2°C). In the month of June, the average temperature dips to a comfortable 62.4°F (16.9°C) during the night.Heat index
June's mean heat index is computed to be a hot 87.8°F (31°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.Heat index determinations are made taking into account the shade and light air movements. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In Ashburn, the average relative humidity in June is 72%.Rainfall
In Ashburn, in June, during 14.8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Ashburn, there are 158.1 rainfall days, and 31.46" (799mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The month with the longest days is June, with an average of 14h and 54min of daylight.On the first day of June, sunrise is at 5:45 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:39 pm EDT.
Sunshine
In June, the average sunshine in Ashburn is 10.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in June transforms into the following instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Ashburn, VA
- Average high temperature in June: 82.8°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in June: 62.4°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in June
Ashburn, VA
- Average pressure in June: 29.95"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in June
Ashburn, VA
- Average wind speed in June: 5.5mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in June
Ashburn, VA
- Average humidity in June: 72%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (70%).
Average rainfall in June
Ashburn, VA
- Average rainfall in June: 2.48"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in June
Ashburn, VA
- Average rainfall days in June: 14.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in June
Ashburn, VA
- Average snowfall in June: 0"
The month with the highest snowfall is January (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in June
Ashburn, VA
- Average snowfall days in June: 0 days
The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in June /
Average sunshine in June
Ashburn, VA
- Average daylight in June: 14h and 54min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in June: 10h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).
Average sunshine days in June
Ashburn, VA
- Average sunshine days in June: 13.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in June
Ashburn, VA
- Average UV index in June: 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 June
Ashburn, VA
- Average cloud cover in June: 34
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in June
Ashburn, VA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
