January weather forecastMartinsburg, WV
January
Weather in January
In Martinsburg, West Virginia, the brisk and chilly air of January brings with it the lowest temperatures of the year. Notably, the mercury plummets to as low as 23.5°F (-4.7°C) making it the coldest month. White landscapes are common due to occasional snowfall, adding a picturesque layer to the city. The days are short, with relatively low daylight hours, and frequent cloud cover brings a subdued light to the town. Winds can be brisk, adding to the winter's chill.Temperature
Martinsburg's January weather reaches an average high of 37.4°F (3°C) and an average low of 23.5°F (-4.7°C), making it the coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 4.5 days and typically collects 0.67" (17mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 5.3 days and accumulates 1.26" (32mm) of snow.Daylight
In January, the average length of the day is 9h and 46min.On the first day of January, sunrise is at 7:31 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:30 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 during January translates into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Stay sun-safe with clothing that is both closely woven and worn loosely. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Martinsburg, WV
- Average high temperature in January: 37.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in January: 23.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in January
Martinsburg, WV
- 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
Martinsburg, WV
- Average wind speed in January: 7.1mph
The windiest month (with the highest average wind speed) is March (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in January
Martinsburg, WV
- Average humidity in January: 75%
The months with the highest relative humidity are May, October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in January
Martinsburg, WV
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in January
Martinsburg, WV
- Average rainfall days in January: 4.5 days
The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in January
Martinsburg, WV
- Average snowfall in January: 1.26"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Martinsburg, WV
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is January (5.3 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
Martinsburg, WV
- Average daylight in January: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in January
Martinsburg, WV
- Average sunshine days in January: 21.7 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is May (14.6 days).
Average UV index in January
Martinsburg, WV
- 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, February, November and December (UV index 2).
Average cloud cover in January
Martinsburg, WV
- Average cloud cover in January: 48
The months with the most cloud cover are January, March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Martinsburg, WV
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
