Martinsburg, West Virginia, experiences a humid subtropical climate with hot, humid summers and cold, snowy winters. The city receives an average of 42 inches of rain and 22 inches of snow per year. The average temperature in July is 77 degrees Fahrenheit, and the average temperature in January is 32 degrees Fahrenheit.
The weather in Martinsburg is influenced by its location in the Shenandoah Valley. The valley is surrounded by mountains, which help to protect it from cold air masses from the north and west. However, the valley is also open to warm air masses from the south and east. This combination of factors results in a climate that is generally mild and temperate.