January weather forecast
West Falls Church, VA

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Weather in January

January, like December, in West Falls Church, Virginia, is an icy winter month, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 40.1°F (4.5°C).

Temperature

In West Falls Church, Virginia, the month of January registers the lowest temperatures, averaging 40.1°F (4.5°C) at the peak and 26.8°F (-2.9°C) at the lowest.

Humidity

In West Falls Church, the average relative humidity in January is 72%.

Rainfall

January and September are months with the least rain in West Falls Church, Virginia, when the rain falls for 6 days and typically aggregates up to 0.51" (13mm) of rain.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall in West Falls Church 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 in West Falls Church is 9h and 49min.
On the first day of the month, sunrise is at 7:27 am and sunset at 4:57 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:28 pm EST.

Sunshine

In January, the average sunshine 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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What are the coldest months in West Falls Church?

January is the month that records the lowest temperatures, with averages ranging from a high of 40.1°F (4.5°C) to a low of 26.8°F (-2.9°C).

Is it cold in West Falls Church during January?

The high-temperature, in January, in West Falls Church, is 40.1°F (4.5°C), while the low-temperature averages to 26.8°F (-2.9°C).

What is the average humidity in January in West Falls Church?

In West Falls Church, Virginia, the average relative humidity in January is 72%.

What is the driest month in West Falls Church?

January and September are months with the least rain in West Falls Church, Virginia, when the rain falls for 6 days and typically aggregates up to 0.51" (13mm) of rain.

How much does it rain in West Falls Church in January?

In January, in West Falls Church, Virginia, the rain falls for 6 days. Throughout January, 0.51" (13mm) of precipitation is accumulated.

What is the snowiest month in West Falls Church?

January is the month with the most snowfall in West Falls Church. Snow falls for 2.7 days and accumulates 0.98" (25mm) of snow.

How many days does it snow in January in West Falls Church?

In West Falls Church, Virginia, during January, snow falls for 2.7 days and regularly aggregates up to 0.98" (25mm) of snow.

How many hours of daylight does West Falls Church have in January?

In January, the average day length in West Falls Church is 9h and 49min.

When are sunrise and sunset in January in West Falls Church?

In January, on the first day of the month, sunrise is at 7:27 am and sunset at 4:57 pm. On the last day of the month, in West Falls Church, Virginia, sunrise is at 7:15 am and sunset at 5:28 pm EST.

How many hours of sunshine does West Falls Church have in January?

The average sunshine duration in January in West Falls Church, Virginia, is 5.2h.

What are the months with the lowest UV index in West Falls Church?

The months with the lowest UV index in West Falls Church are January, November and December, with an average maximum UV index of 2.

How high is the UV index in January in West Falls Church?

In West Falls Church, Virginia, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.5°F 7.5°C
40.1°F 4.5°C
44.6°F 7°C
Average low temperature
33.1°F 0.6°C
26.8°F -2.9°C
29.5°F -1.4°C
Average pressure
30.11" 765mmHg
30.11" 765mmHg
30.07" 764mmHg
Average wind speed
6.8mph 10.9km/h
7.4mph 11.9km/h
7.5mph 12.1km/h
Average max. wind speed
7.4mph 11.9km/h
8.1mph 13km/h
8.1mph 13km/h
Average wind speed gusts
10.6mph 17.1km/h
11.4mph 18.3km/h
11.7mph 18.8km/h
Average humidity
76%
72%
74%
Average rainfall
0.67" 17mm
0.51" 13mm
0.55" 14mm
Average rainfall days
6.9
6
6.3
Average snowfall
0.28" 7mm
0.98" 25mm
0.35" 9mm
Average snowfall days
1.2
2.7
3.6
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 1min
5h 1min
5h 1min
Average sunshine days
22
22.1
18.3
Average UV index
2
2
3
Average cloud cover
45%
44%
44%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
West Falls Church, VA

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).

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Average pressure in January
West Falls Church, VA

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).

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Average wind speed in January
West Falls Church, VA

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).

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Average humidity in January
West Falls Church, VA

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%).

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Average rainfall in January
West Falls Church, VA

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").

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Average rainfall days in January
West Falls Church, VA

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).

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Average snowfall in January
West Falls Church, VA

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").

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Average snowfall days in January
West Falls Church, VA

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).

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Average daylight in January /
Average sunshine in January
West Falls Church, VA

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).

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Average sunshine days in January
West Falls Church, VA

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).

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Average UV index in January
West Falls Church, VA

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).

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Average cloud cover in January
West Falls Church, VA

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).

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Average visibility in January
West Falls Church, VA

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).

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West Falls Church, Virginia, USA

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