August weather forecastWinchester, VA
August
Weather in August
August persists with the summer heat but it is often a few degrees cooler than July, with maximum temperatures averaging around 83.8°F (28.8°C). The city is amply illuminated with plenty of sunshine and daylight hours. Outdoor activities continue to thrive given the favorable weather conditions. Late in the month, a gradual decrease in temperatures can be noticed, signaling the upcoming fall season.Temperature
Upon the beginning of August, Winchester's high-temperatures register at a moderately hot 83.8°F (28.8°C), closely mirroring the preceding month. Nightfall in August introduces a considerable dip in temperature in Winchester, settling at an average of 62.2°F (16.8°C).Heat index
For most parts of August, the heat index is calculated to be a tropical 91.4°F (33°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
The average relative humidity in August in Winchester is 75%.Rainfall
In Winchester, in August, during 17.3 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, in Winchester, there are 167.2 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
In Winchester, snow does not fall in June through September.Daylight
The average length of the day in August in Winchester is 13h and 40min.On the first day of August in Winchester, sunrise is at 6:13 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:44 pm EDT.
Sunshine
The average sunshine in August is 10.3h.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 health hazard from exposure to the Sun's UV rays for the average person.Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Winchester, VA
- Average high temperature in August: 83.8°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in August
Winchester, VA
- Average pressure in August: 30"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 August
Winchester, VA
- Average wind speed in August: 4.2mph
The windiest month (with the highest average wind speed) is March (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in August
Winchester, VA
- Average humidity in August: 75%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is July (73%).
Average rainfall in August
Winchester, VA
- Average rainfall in August: 3.03"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in August
Winchester, VA
- Average rainfall days in August: 17.3 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in August
Winchester, VA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Winchester, VA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Winchester, VA
- Average daylight in August: 13h and 42min
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 August: 10h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in August
Winchester, VA
- Average sunshine days in August: 11.7 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in August
Winchester, VA
- Average UV index in August: 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 August
Winchester, VA
- Average cloud cover in August: 32
The months with the most cloud cover are February, March and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in August
Winchester, VA
- Average visibility in August: 6mi
The months with the highest visibility are February, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, March, May, September and October (5mi).
