About Lightning in Maryland
Located at approximately 39°N latitude, Maryland is a compact state spanning the Chesapeake Bay, where sea-breeze boundaries and Appalachian outflow create convergence zones that trigger afternoon thunderstorms. Thunderstorm frequency varies within state boundaries, so this page does not publish an unsupported statewide annual average or national rank.
In Maryland, maritime air masses interact with continental weather patterns during warm months. Peak thunderstorm activity occurs during May through August, when conditions align for the most frequent lightning strikes. With a population of 6.2 million residents, storm awareness and lightning safety are important considerations for anyone living in or visiting Maryland.