Maryland is dealing with another humid and unsettled summer day, with clouds increasing and thunderstorms expected to develop across portions of the state this afternoon and evening.
The main concern will be locally heavy rainfall. Any stronger storm may also produce gusty winds, frequent lightning, sharply reduced visibility, and brief flooding in low-lying or poor-drainage areas. Not every community will see a storm, but conditions may change quickly where storms develop.
Straight to the Point
Expect a warm and humid day with highs generally in the 80s across much of Maryland. Scattered showers and thunderstorms become more likely this afternoon and evening, with heavy rainfall and localized damaging wind gusts possible in the strongest storms.
Keep outdoor plans flexible and monitor radar before traveling later today.
Conditions Across Maryland
Western Maryland
Garrett County will remain somewhat cooler than the rest of the state, with considerable cloud cover and scattered showers or thunderstorms possible.
Allegany and Washington counties will be warmer and humid, with storm chances increasing through the afternoon. Heavy rain and gusty winds may briefly affect travel where thunderstorms develop.
North-Central Maryland
Frederick and Carroll counties can expect warm, humid conditions with increasing cloud cover. Scattered afternoon and evening thunderstorms may produce torrential downpours, lightning, and localized ponding on roads.
Baltimore Metro
Baltimore City and Baltimore, Howard, Anne Arundel and Harford counties will experience humid conditions with temperatures generally reaching the middle to upper 80s.
Thunderstorms may develop or move through during the afternoon and evening. Localized flash flooding and strong wind gusts cannot be ruled out where the heaviest storms occur.
Washington Suburbs
Montgomery and Prince George’s counties will remain warm and muggy with scattered thunderstorms possible later today.
Heavy rainfall will be the primary concern, particularly across urban and poor-drainage locations. Drivers should be prepared for sudden reductions in visibility and standing water.
Southern Maryland
Charles, Calvert and St. Mary’s counties will remain humid with periods of clouds and sunshine. Scattered thunderstorms may develop during the afternoon and evening, bringing lightning, heavy rain and locally gusty winds.
Upper Eastern Shore
Cecil, Kent, Queen Anne’s, Caroline and Talbot counties will see warm and humid conditions with scattered showers and thunderstorms possible.
Some storms may produce brief torrential rainfall and localized flooding, especially if repeated storms move over the same communities.
Lower Eastern Shore and Beaches
Dorchester, Wicomico, Somerset and Worcester counties will remain humid, with highs generally in the 80s inland and somewhat cooler conditions near Ocean City and Assateague.
Scattered thunderstorms may affect portions of the Lower Eastern Shore later today. Beachgoers and boaters should be prepared to leave the water quickly if thunder is heard.
Afternoon and Evening Storm Threat
Storm coverage will not be uniform. One community may receive heavy rain while another nearby remains mostly dry.
The strongest storms may produce:
- Torrential rainfall
- Localized flash flooding
- Frequent lightning
- Wind gusts capable of minor tree or power-line damage
- Sudden reductions in visibility
- Ponding on roads
Never drive through a flooded roadway. Water may be deeper or moving faster than it appears.
Chesapeake Bay and Marine Conditions
Boaters should closely monitor radar and weather alerts throughout the afternoon and evening. Thunderstorms may produce sudden wind shifts, locally higher waves, dangerous lightning and sharply reduced visibility.
Move to safe harbor immediately if threatening weather approaches.
Tonight
Scattered showers and thunderstorms may continue into the evening before gradually becoming less widespread.
Conditions will remain humid, with overnight lows generally in the upper 60s and lower 70s. Areas that receive rain may also experience patches of fog or reduced visibility overnight.
Bottom Line
Today will not be a complete washout, but scattered thunderstorms may disrupt outdoor plans and travel during the afternoon and evening.
The greatest concern will be heavy rainfall and localized flooding, although isolated strong wind gusts are also possible. Keep an eye on radar, have weather alerts enabled, and be ready to move indoors when thunder approaches.
MD Weather Alerts will continue monitoring conditions and any watches or warnings issued across Maryland. ⛈️