Antietam, MD is located in the Mid-Atlantic region of the United States and has a humid subtropical climate. The summers are hot and humid while the winters are cold and wet. Average temperatures range from 28°F in winter to 86°F in summer. Rainfall is abundant throughout the year, with an average of more than 40 inches per year. Snowfall in Antietam is relatively low, with only around 15 inches of snow each year on average. Although it does not snow much here, Antietam gets plenty of cold weather during winter months, and strong wind gusts can often be felt in spring and fall.
Antietam, Maryland gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Antietam averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 197 sunny days per year in Antietam. The US average is 205 sunny days.
Antietam gets some kind of precipitation, on average, 115 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 86 degrees
Winter Low: the January low is 21
Rain: averages 41 inches of rain a year
Snow: averages 20 inches of snow a year