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
January is the coldest month of the year, registering average temperatures as high as 40.6°F (4.8°C) and as low as 27.7°F (-2.4°C).Humidity
In Mount Vernon, Virginia, the average relative humidity in January is 72%.Rainfall
In Mount Vernon, Virginia, during January, the rain falls for 9.9 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 158.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Mount Vernon. The month with the most snowfall is January, when snow falls for 4.5 days and typically aggregates up to 2.48" (63mm) of snow.Daylight
In January, the average length of the day is 9h and 49min.On the first day of the month, sunrise is at 7:26 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
The average sunshine in January in Mount Vernon, Virginia, is 5.2h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Vernon. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What are the coldest months in Mount Vernon?
How cold does it get in Mount Vernon in January?
What is the average humidity in January in Mount Vernon?
How many days does it rain in January in Mount Vernon?
What is the snowiest month in Mount Vernon?
How much does it snow in Mount Vernon in January?
How many hours of daylight does Mount Vernon have in January?
When are sunrise and sunset in January in Mount Vernon?
How long on average sun shines in January in Mount Vernon?
What is the month with the lowest UV index in Mount Vernon?
How high is the UV index in January in Mount Vernon?
Average temperature in January
Mount Vernon, VA
- Average high temperature in January: 40.6°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in January: 27.7°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 (27.7°F).
Average pressure in January
Mount Vernon, 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
Mount Vernon, VA
- Average wind speed in January: 7.5mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Mount Vernon, VA
- Average humidity in January: 72%
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in January
Mount Vernon, VA
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in January
Mount Vernon, VA
- Average rainfall days in January: 9.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in January
Mount Vernon, VA
- Average snowfall in January: 2.48"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Mount Vernon, VA
- Average snowfall days in January: 4.5 days
The month with the highest number of snowfall days is January (4.5 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
Mount Vernon, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in January
Mount Vernon, VA
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in January
Mount Vernon, 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 and December (UV index 2).
Average cloud cover in January
Mount Vernon, 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
Mount Vernon, 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).
Mount Vernon, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location
