Maryland Geography and Topography

Two majors influences on the weather is land near water and elevation.

Proximty to Water

Places near the water tend to be warmer in the winter and cooler in the summer.  Maryland has plenty of water. It’s a lot more than the border on the Atlantic Ocean.  If you include all the shoreline around the Chesapeak Bay, the total length is 3,190 miles. According to NOAA, that ranks 10th in the US.


A little more half of Maryland is realtively flat and near sea level in the coasrtal plain. I-95 is arond the deviding line of the Fall Line. West and north of this boundary is where the hills gradually get higher.

A general rule of weather on a dry day is that temperatures will be 5ºF cooler for every 1,000 feet in elevation.