In Maryland's northwest region, the average annual temperature is 48 F while the Chesapeake Bay region in the southeast averages 59 F annually. The state has a diverse climate depending on which region visitors travel to. Baltimore -- Maryland's largest city -- has an average annual temperature of 55 F, with a winter low average of 33 F and a summer high average of 77 F. Maryland's record high occurred on June 10, 1936 at 109 F and the record low was -40 F on January 13, 1912.
Rain and snowfall vary vastly from one end of Maryland to the next. West of the Appalachians, the average rainfall is 36 inches annually. In the southeast region of the state, the average annual rainfall is 49 inches.Garrett County, in the northwestern corner of the state bordering West Virginia and Pennsylvania, receives up to 100 inches of snow annually, while Baltimore gets an annual average of just 22 inches.
Maryland is a temperate climate, which means it has four distinct seasons. Since Baltimore is located on an inlet of the Chesapeake Bay and Atlantic Ocean, its seasonal climate is humid and warm in the summer and winter, compared to northwestern regions in the Appalachian Mountains. Maryland has moderate winters and warm summers, with seasonal weather patterns less pronounced than those found in states farther north.
Maryland's biggest storm threats are hurricanes on the United States's eastern seaboard from March through October and blizzards in the mountainous northwestern region from November through March. Tornadoes and earthquakes are not common in Maryland, and the fear of natural disasters should not deter visitors from enjoying the state.
