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
Fairfax's progression into October includes a drop in the average high-temperature, from a warm 78.4°F (25.8°C) in September to a comfortable 66.6°F (19.2°C). Fairfax throughout October, records an average low-temperature of 49.8°F (9.9°C).Humidity
October and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Fairfax, Virginia, during October, the rain falls for 12.2 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, in Fairfax, Virginia, there are 162 rainfall days, and 31.65" (804mm) of precipitation is accumulated.Snowfall
In Fairfax, Virginia, snow does not fall in May through October.Daylight
In October, the average length of the day in Fairfax 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, in Fairfax, sunrise is at 7:36 am and sunset at 6:09 pm EDT.
Sunshine
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 moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 4 during October, leads to the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What are the temperatures in Fairfax in October?
What are the most humid months in Fairfax?
What is the average humidity in October in Fairfax?
How many days does it rain in October in Fairfax?
When it does not snow in Fairfax?
Does it snow in Fairfax in October?
How many hours of daylight does Fairfax have in October?
When is the sunrise / sunset in October in Fairfax?
How long on average sun shines in October in Fairfax?
What is the UV index reading in October in Fairfax?
Average temperature in October
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 12min).
Average sunshine days in October
Fairfax, 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
Fairfax, 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
Fairfax, 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
Fairfax, 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).
Fairfax, Virginia, USA
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