Adelphi, MD is located in the mid-Atlantic region of the United States and experiences a humid subtropical climate with hot, humid summers and cool winters. The highest recorded temperature was 103°F in August of 1988 and the lowest was 0°F in January of 1985. Precipitation is evenly distributed throughout the year with an average rainfall of around 39 inches per year. Winters tend to bring wet snowfall and can sometimes reach up to 12 inches or more during heavy snow seasons. Summers are usually hot and humid, which can often become oppressive when combined with humidity levels that can reach over 80%.
Adelphi, Maryland gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Adelphi averages 13 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Adelphi. The US average is 205 sunny days.
Adelphi gets some kind of precipitation, on average, 112 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 89 degrees
Winter Low: the January low is 25
Rain: averages 43 inches of rain a year
Snow: averages 13 inches of snow a year