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
Arlington's January weather, marked by an average high temperature of 40.6°F (4.8°C) and an average low temperature of 27.5°F (-2.5°C), is the coldest in the year.Humidity
In January, the average relative humidity in Arlington is 72%.Rainfall
January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 1.57" (40mm) of precipitation.Snowfall
January through March and December are months with snowfall in Arlington. The month with the most snowfall in Arlington is January, when snow falls for 3.8 days and typically aggregates up to 2.17" (55mm) of snow.Daylight
In Arlington, the average length of the day in January is 9h and 49min.On the first day of the month, sunrise is at 7:26 am and sunset at 4:56 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:28 pm EST.
Sunshine
January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index in Arlington, Virginia, are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during January translates into the following directions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Arlington?
Is January cold in Arlington?
What is the average humidity in January in Arlington?
What is the driest month in Arlington?
How many days does it rain in January in Arlington?
What is the snowiest month in Arlington?
How many days does it snow in January in Arlington?
What is the average length of the day in January in Arlington?
What time are sunrise and sunset in January in Arlington?
What is the month with the least sunshine in Arlington?
How long on average sun shines in January in Arlington?
What are the months with the lowest UV index in Arlington?
How high is the UV index in January in Arlington?
Average temperature in January
Arlington, VA
- Average high temperature in January: 40.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in January: 27.5°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 (27.5°F).
Average pressure in January
Arlington, 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
Arlington, VA
- Average wind speed in January: 7.6mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Arlington, VA
- Average humidity in January: 72%
The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in January
Arlington, VA
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in January
Arlington, VA
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in January
Arlington, VA
- Average snowfall in January: 2.17"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Arlington, VA
- Average snowfall days in January: 3.8 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Arlington, 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 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in January
Arlington, VA
- Average sunshine days in January: 18.2 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in January
Arlington, VA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Arlington, VA
- Average cloud cover in January: 43
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
Arlington, 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).
Arlington, Virginia, USA
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