Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
A subtle decrease in the average high-temperature marks October, falling from September's moderately hot 78.6°F (25.9°C) to a comfortable 66.4°F (19.1°C). Annandale's temperature drops to an average low of 50.2°F (10.1°C) during the nights of October.Humidity
The most humid month is October, with an average relative humidity of 77%.Rainfall
In October, in Annandale, the rain falls for 12.2 days. Throughout October, 2.6" (66mm) of precipitation is accumulated. In Annandale, during the entire year, the rain falls for 161.2 days and collects up to 31.54" (801mm) of precipitation.Snowfall
May through October are months without snowfall in Annandale.Daylight
In Annandale, Virginia, the average length of the day in October is 11h and 10min.On the first day of October, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 6:09 pm EDT.
Sunshine
In Annandale, the average sunshine in October is 5.7h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 4 in October suggests the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. 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
What are the temperatures in Annandale in October?
What is the most humid month in Annandale?
What is the average humidity in October in Annandale?
How many days does it rain in October in Annandale?
When it does not snow in Annandale?
Does it snow in Annandale in October?
What is the average length of the day in October in Annandale?
When is the sunrise / sunset in October in Annandale?
How many hours of sunshine does Annandale have in October?
How high is the UV index in October in Annandale?
Average temperature in October
Annandale, VA
- Average high temperature in October: 66.4°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 (40.5°F).
- Average low temperature in October: 50.2°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in October
Annandale, 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
Annandale, VA
- Average wind speed in October: 6.3mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in October
Annandale, VA
- Average humidity in October: 77%
The month with the highest relative humidity is October (77%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in October
Annandale, VA
- Average rainfall in October: 2.6"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in October
Annandale, VA
- Average rainfall days in October: 12.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in October
Annandale, VA
- Average snowfall in October: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Annandale, VA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (4.9 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
Annandale, VA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in October
Annandale, VA
- Average sunshine days in October: 17.3 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in October
Annandale, 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, November and December (UV index 2).
Average cloud cover in October
Annandale, VA
- Average cloud cover in October: 38
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
Annandale, 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).
Annandale, Virginia, USA
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