Martinsburg is located in the northern part of Missouri, and has a humid continental climate. This means that the summers are hot and humid, while winters tend to be cold with occasional snowfall. Temperatures can range from an average high of 86°F (30°C) in the summer to an average low of 23°F (-5°C) in the winter. The area also receives an average of 45 inches (114 cm) of rainfall each year, making it one of the wettest climates in Missouri.
Martinsburg, Missouri gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Martinsburg averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 195 sunny days per year in Martinsburg. The US average is 205 sunny days.
Martinsburg gets some kind of precipitation, on average, 107 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 87 degrees
Winter Low: the January low is 19
Rain: averages 44 inches of rain a year
Snow: averages 18 inches of snow a year