21077 Severn, MD has a humid subtropical climate characterized by hot and humid summers, mild to chilly winters, and plenty of precipitation throughout the year. Summers range from hot and humid with temperatures in the mid-80s (F), while winters are usually cool to cold with temperatures dipping into the low 30s at night (F). Precipitation is abundant throughout the year, with April seeing the highest amount of rainfall due to thunderstorms. Snowfall is occasionally seen in winter months that average around 4 inches of accumulation per season.
Severn (zip 21077), Maryland gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Severn (zip 21077) averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 213 sunny days per year in Severn (zip 21077). The US average is 205 sunny days.
Severn (zip 21077) gets some kind of precipitation, on average, 113 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 28
Rain: averages 42 inches of rain a year
Snow: averages 17 inches of snow a year