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
The shift from September to October involves a decrease in the average high-temperature, dropping from a warm 78.4°F (25.8°C) to a refreshing 66.6°F (19.2°C). October's average low-temperature reading in Chantilly settles at a frosty 49.1°F (9.5°C).Humidity
The months with the highest humidity are October and December, with an average relative humidity of 77%.Rainfall
In October, the rain falls for 12 days. Throughout October, 2.52" (64mm) of precipitation is accumulated. In Chantilly, during the entire year, the rain falls for 156 days and collects up to 31.18" (792mm) of precipitation.Snowfall
In Chantilly, snow does not fall in May through October.Daylight
In Chantilly, 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, in Chantilly, Virginia, sunrise is at 7:36 am and sunset at 6:10 pm EDT.
Sunshine
In October, the average sunshine in Chantilly, Virginia, is 5.6h.UV index
In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In October, the maximum UV index of 3 suggests these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are October temperatures in Chantilly?
What is the most humid month in Chantilly?
What is the average humidity in October in Chantilly?
How many days does it rain in October in Chantilly?
When it does not snow in Chantilly?
Does it snow in Chantilly in October?
What is the average length of the day in October in Chantilly?
When is the sunrise / sunset in October in Chantilly?
How many hours of sunshine does Chantilly have in October?
What is the UV index reading in October in Chantilly?
Average temperature in October
Chantilly, VA
- Average high temperature in October: 66.6°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in October: 49.1°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 (25.7°F).
Average pressure in October
Chantilly, 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
Chantilly, VA
- Average wind speed in October: 6.2mph
The windiest months (with the highest average wind speed) are March and April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in October
Chantilly, 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
Chantilly, VA
- Average rainfall in October: 2.52"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in October
Chantilly, VA
- Average rainfall days in October: 12 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in October
Chantilly, VA
- Average snowfall in October: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Chantilly, VA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (5.3 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
Chantilly, VA
- Average daylight in October: 11h and 1min
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 4min
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 6min).
Average sunshine days in October
Chantilly, VA
- Average sunshine days in October: 17.3 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in October
Chantilly, VA
- Average UV index in October: 3
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
Chantilly, 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
Chantilly, VA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and May (5mi).
Chantilly, Virginia, USA
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