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 sees the lowest average temperatures, reaching 31.8°F (-0.1°C) at the peak and 19.9°F (-6.7°C) at the low.Humidity
The average relative humidity in January is 81%.Rainfall
In January, the rain falls for 10.1 days. Throughout January, 2.09" (53mm) of precipitation is accumulated. Throughout the year, there are 170.1 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In January, it is snowing for 14.3 days. Throughout January, 5.91" (150mm) of snow is accumulated. In Martinsburg, during the entire year, snow falls for 52.3 days and aggregates up to 25.55" (649mm) of snow.Daylight
In Martinsburg, the average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:35 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:29 pm EST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index in Martinsburg are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the average humidity in January in Martinsburg?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Martinsburg have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Martinsburg, PA
- Average high temperature in January: 31.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in January: 19.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in January
Martinsburg, PA
- Average pressure in January: 30.1"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, PA
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Martinsburg, PA
- Average humidity in January: 81%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in January
Martinsburg, PA
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in January
Martinsburg, PA
- Average rainfall days in January: 10.1 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in January
Martinsburg, PA
- Average snowfall in January: 5.91"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Martinsburg, PA
- Average snowfall days in January: 14.3 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Martinsburg, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Martinsburg, PA
- Average sunshine days in January: 10.7 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in January
Martinsburg, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Martinsburg, PA
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Martinsburg, PA
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Martinsburg, Pennsylvania, USA
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