Not much to report tonight, and that’s a good thing. Both NWS Baltimore/Washington (2:39 PM update) and NWS Wakefield (2:53 PM) describe the same tranquil setup: high pressure sliding offshore, light winds, and a mild, mostly clear night across all of Maryland. NWS Mount Holly (4:40 PM) covers the upper shore and coast with the identical story — pleasant tonight, breezier and warmer tomorrow. No watches, warnings, or advisories are in effect anywhere in the state as of this writing. Enjoy it; Thursday’s the next weather-maker.
Tonight’s Timeline
Evening (7–10 PM): Skies clear to partly cloudy statewide, temperatures easing down from the 80s into the 70s. Light winds, generally south to southeast at 5-10 mph.
Late night (10 PM–3 AM): Calm and quiet. Some high, thin clouds may drift in ahead of tomorrow’s warm-up, especially north and west.
Predawn (3–7 AM): Patchy fog develops in river valleys and low-lying spots — Garrett County, the Cumberland/Allegany valley, and the Frederick/Hagerstown lowlands are the likeliest candidates. Give yourself a few extra minutes on the morning commute if you’re driving through a hollow.
No rain, no storms, no wind concerns tonight anywhere in Maryland.
Region by Region
Western Maryland — Garrett & Allegany: Deep Creek and Oakland settle into the upper 50s tonight (gridpoint 59°), under a patchy-fog sky with essentially calm winds. Cumberland runs a bit milder at 62°, also with patchy fog possible in the valley bottoms. Comfortable sleeping weather up here — maybe the best air of the week.
Northern & Central — Washington, Frederick, Carroll: Hagerstown drops to around 64° tonight, partly cloudy early with patchy fog developing toward dawn. Frederick and Carroll counties see the same — low 64° reading, calm winds, clearing skies overnight. A pleasant, quiet night for Antietam country and the Carroll farmland alike.
Baltimore Metro — Baltimore City & County, Harford, Howard, Anne Arundel: The metro corridor holds up slightly warmer, bottoming out near 68° under partly cloudy skies with light southeast winds around 2-6 mph. Nothing to complain about from the Inner Harbor to Bel Air to Annapolis — just a comfortable late-summer night.
DC Suburbs — Montgomery & Prince George’s: Silver Spring’s gridpoint reads 66° tonight, partly cloudy with light south winds near 6 mph. College Park and points south track the same. A calm, mild night for the Beltway counties.
Southern Maryland — Charles, Calvert, St. Mary’s: Prince Frederick’s overnight low sits near 65°, partly cloudy with light south winds around 6 mph. Quiet on the water and quiet on land — a good night to leave the windows cracked.
Upper Eastern Shore — Cecil, Kent, Queen Anne’s, Talbot, Caroline: Easton’s gridpoint calls for 68° overnight, partly cloudy, winds light out of the south. A gentle, easy night across the upper shore’s farm country and river towns.
Lower Eastern Shore — Dorchester, Wicomico, Somerset: Salisbury cools to near 64° under partly cloudy skies, with south winds around 3-7 mph. Similar story from Cambridge down through Crisfield.
Ocean City & the Coast — Worcester County: The boardwalk holds near 67° overnight under partly cloudy skies, south winds around 9 mph. Surf stays around 2 feet with a low rip current risk — about as benign as beach conditions get. Low tide at the Ocean City Fishing Pier came in at 11:43 AM today; check the latest tide charts locally for tonight’s cycle. A fine night for a boardwalk stroll.
Active Hazards
None. There are no watches, warnings, or advisories in effect anywhere in Maryland as of this evening. The LWX Hazardous Weather Outlook explicitly notes no hazardous weather expected tonight. Enjoy the break — Thursday’s shower/storm chances and possible late-week marine advisories are the next things worth watching.
Severe & Flooding
No severe weather or flooding threat tonight anywhere in the state. Confidence is high — this is about as tranquil as Maryland nights get in September.
Heat, Humidity & Winds
Dew points remain comfortable in the 50s to low 60s tonight — no mugginess to speak of. Winds are light across the board, generally south to southeast at 5-10 mph, with no wind advisories in play. On the Bay and tidal Potomac, some modest channeling could nudge winds up slightly overnight, but nothing approaching Small Craft Advisory criteria in Maryland waters tonight (that threshold arrives Wednesday afternoon/evening as the pattern shifts).
Overnight Lows by Zone
| Zone | Low |
| Western Mountains (Garrett) | ~59° |
| Cumberland / Hagerstown | 62-64° |
| Frederick / Carroll | ~64° |
| Baltimore / DC corridor | 66-68° |
| Southern Maryland | ~65° |
| Eastern Shore | 64-68° |
| Ocean City | ~67° |
Looking Ahead
Wednesday: Warmer and breezier as the high slides offshore. Highs push into the upper 80s to near 90° across central Maryland, Hagerstown, and Frederick/Carroll (88-89° gridpoints), with mid-to-upper 80s on the Eastern Shore and around 82° at the coast where sea breeze keeps things in check. Garrett County stays cooler in the upper 70s. Winds turn breezy out of the south/southwest, gusting 20-25 mph inland and 25-30 mph near the coast — Small Craft Advisories go up for the Atlantic coastal waters and Delaware Bay Wednesday afternoon. A slight chance of a few showers lingers over the far western fringe (Garrett/Allegany) into Wednesday night, otherwise dry. Morning river valley fog is likely again.
Thursday: The bigger story of the week — a cold front finally works through, bringing shower and thunderstorm chances statewide, highest in the afternoon and evening. Some downpours and gusty winds are possible, especially south of the DC/Baltimore corridor, though limited instability keeps severe potential on the lower end. Behind it, Friday turns noticeably cooler and less humid — a preview of fall — before humidity creeps back for the weekend.
Data: NWS Baltimore/Washington, Mount Holly & Wakefield.
MD Weather Alerts — your director’s cut for every corner of Maryland, from Deep Creek to the boardwalk. Sleep easy tonight; we’ll be back with the Wednesday outlook.