October weather forecastReston, VA
October
Weather in October
October, like September, in Reston, Virginia, is another comfortable autumn month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 66.2°F (19°C).Temperature
During the transition into October, Reston observes a decrease in the average high-temperature, falling from a moderately hot 78.4°F (25.8°C) in September to a comfortable 66.2°F (19°C). In Reston, in October, the average low-temperature is a frosty 49.6°F (9.8°C).Humidity
The months with the highest humidity are October and December, with an average relative humidity of 76%.Rainfall
In Reston, in October, it is raining for 12 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 152.8 rainfall days, and 27.64" (702mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Reston, the average length of the day in October is 11h and 10min.On the first day of the month, sunrise is at 7:06 am and sunset at 6:51 pm. On the last day of October, sunrise is at 7:36 am and sunset at 6:09 pm EDT.
Sunshine
In October, the average sunshine is 5.6h.UV index
In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 4 in October transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Reston, VA
- Average high temperature in October: 66.2°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in October: 49.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in October
Reston, VA
- Average pressure in October: 30.04"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 October
Reston, VA
- Average wind speed in October: 6.5mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in October
Reston, VA
- Average humidity in October: 76%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in October
Reston, VA
- Average rainfall in October: 2.28"
The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in October
Reston, VA
- Average rainfall days in October: 12 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in October
Reston, VA
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Reston, VA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Reston, VA
- Average daylight in October: 11h and 12min
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 October: 5h and 36min
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 October
Reston, VA
- Average sunshine days in October: 17.1 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in October
Reston, VA
- Average UV index in October: 4
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 October
Reston, VA
- Average cloud cover in October: 40
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in October
Reston, VA
- Average visibility in October: 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).
