October weather forecastVienna, VA
October
Weather in October
October, like September, in Vienna, Virginia, is another refreshing autumn month, with temperature in the range of an average low of 49.8°F (9.9°C) and an average high of 66.6°F (19.2°C).Temperature
Vienna observes a minor decrease in the average high-temperature with the arrival of October, falling from September's warm 78.4°F (25.8°C) to a comfortable 66.6°F (19.2°C). Nighttime temperature experiences an average drop to a frosty 49.8°F (9.9°C) in October.Humidity
October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Vienna, during October, the rain falls for 12.2 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, there are 162 rainfall days, and 31.65" (804mm) of precipitation is accumulated.Snowfall
In Vienna, snow does not fall in May through October.Daylight
In Vienna, the average length of the day in October is 11h and 10min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of October, sunrise is at 7:35 am and sunset at 6:09 pm EDT.
Sunshine
In October, the average sunshine is 5.7h.UV index
In Vienna, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 4 during October, leads to the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Vienna, VA
- Average high temperature in October: 66.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in October: 49.8°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in October
Vienna, 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
Vienna, VA
- Average wind speed in October: 6.2mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in October
Vienna, VA
- Average humidity in October: 77%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in October
Vienna, VA
- Average rainfall in October: 2.56"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in October
Vienna, VA
- Average rainfall days in October: 12.2 days
The months with the highest number of rainy days are May and August (17.3 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in October
Vienna, VA
- Average snowfall in October: 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 October
Vienna, VA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (5.6 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
Vienna, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in October
Vienna, VA
- Average sunshine days in October: 17.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in October
Vienna, 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
Vienna, VA
- Average cloud cover in October: 39
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in October
Vienna, 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).
