Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The month of January, characterized by an average high of 40.1°F (4.5°C) and a low of 26.8°F (-2.9°C), is recognized as the coldest.Humidity
In West Falls Church, Virginia, the average relative humidity in January is 72%.Rainfall
January and September are months with the least rain when the rain falls for 6 days and typically aggregates up to 0.51" (13mm) of rain.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall is January, when snow falls for 2.7 days and typically aggregates up to 0.98" (25mm) of snow.Daylight
In January, the average length of the day is 9h and 49min.On the first day of January, sunrise is at 7:27 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:28 pm EST.
Sunshine
In January, the average sunshine in West Falls Church is 5.2h.UV index
The months with the lowest UV index in West Falls Church are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: During January, 2 as the daily maximum UV index converts into the following advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Is January cold?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does West Falls Church have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does West Falls Church have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
West Falls Church, VA
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in January: 26.8°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 (26.8°F).
Average pressure in January
West Falls Church, VA
- Average pressure in January: 30.11"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 January
West Falls Church, VA
- Average wind speed in January: 7.4mph
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 January
West Falls Church, VA
- Average humidity in January: 72%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in January
West Falls Church, VA
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is August (1.5").
The driest months (with the least rainfall) are January and September (0.51").
Average rainfall days in January
West Falls Church, VA
- Average rainfall days in January: 6 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in January
West Falls Church, VA
- Average snowfall in January: 0.98"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
West Falls Church, VA
- Average snowfall days in January: 2.7 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
West Falls Church, VA
- Average daylight in January: 9h and 5min
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 January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in January
West Falls Church, VA
- Average sunshine days in January: 22.1 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in January
West Falls Church, VA
- Average UV index in January: 2
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 January
West Falls Church, VA
- Average cloud cover in January: 44
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 January
West Falls Church, VA
- Average visibility in January: 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).
West Falls Church, Virginia, USA
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