Quiet night on tap across Maryland, and honestly, that’s the whole story. High pressure settling in from the Great Lakes keeps the sky clear, the air comfortable, and the biggest headline is a minor coastal flood advisory tied to the overnight high tide around the Bay. NWS Baltimore/Washington (issued 3:09 PM), NWS Mount Holly (4:38 PM), and NWS Wakefield (3:20 PM) are all singing the same tune tonight: dry, cool, and pleasant, with the warm-up building behind it starting tomorrow.
Tonight’s Timeline
- Evening (7-10 PM): Skies clearing out west to east, light winds, temperatures easing down from the 70s and 80s. A stray sea-breeze shower possible near the Ocean City coast wraps up by early evening.
- 11 PM: Coastal Flood Advisory begins for Anne Arundel’s tidal shoreline (Annapolis area) and continues on the Lower Shore’s bay-facing communities.
- Late night into early morning (2-6 AM): The overnight high tide cycle is the flood-risk window — expect minor splash-over on low-lying roads near the water in Annapolis, and similar minor tidal nuisance flooding on the Dorchester/Wicomico/Somerset bay side.
- Pre-dawn (4-7 AM): Patchy river valley fog likely to develop in spots like Frederick, Hagerstown, and especially the Potomac/Shenandoah-adjacent valleys — give yourself a few extra minutes if you’re out early.
- 7 AM Tuesday: Coastal Flood Advisory expires. Sun returns quickly, and the warming trend begins in earnest.
Region by Region
Western Maryland
Garrett County (Deep Creek/Oakland): Clear and cool tonight, dropping to around 53° — genuinely crisp mountain air, jacket weather if you’re out late. Light easterly winds 2-10 mph.
Allegany (Cumberland): Mostly clear, settling to around 55°. Calm winds, a classic quiet valley night — good radiational cooling setup.
Northern & Central Maryland
Washington County (Hagerstown): Mostly clear, low around 56°, light NE winds. Watch for fog developing toward dawn in the valley bottoms.
Frederick & Carroll: Clear skies, lows near 56°. Calm and comfortable — a genuinely nice night to leave the windows open.
Baltimore Metro
Baltimore City & County, Harford, Howard: Mostly clear, low near 63° — noticeably milder than points west thanks to the urban core and closer proximity to the Bay. Light NE breeze around 5 mph.
Anne Arundel: Same mild low near 63°, but this is the county under the Coastal Flood Advisory tonight (11 PM–7 AM). Low-lying spots around Annapolis, Eastport, and the City Dock area should watch for minor tidal flooding around the overnight high tide.
DC Suburbs
Montgomery & Prince George’s: Mostly clear, lows in the low 60s (near 61-64°). Calm, comfortable, unremarkable in the best way.
Southern Maryland
Charles, Calvert, St. Mary’s: Mostly clear, low near 61°, light SE winds. Very minor precip chance (1%) essentially a non-issue — plan on a dry, pleasant night along the Patuxent and Potomac shorelines.
Upper Eastern Shore
Cecil, Kent, Queen Anne’s, Talbot, Caroline: Mostly clear, low near 63°. Light southeast breeze, calm bay waters. No flood advisory here, but keep an eye on docks and low piers regardless — the Bay’s running about a foot above normal.
Lower Eastern Shore
Dorchester, Wicomico, Somerset: Mostly clear, low near 60°, but these three counties are under the Coastal Flood Advisory tonight through 7 AM Tuesday. Bay-side low spots — think Hoopers Island, Deal Island, the Wicomico River shoreline — should expect minor nuisance flooding around the overnight high tide cycle.
Ocean City & the Coast
Worcester County: Mostly clear, low near 65° — the mildest overnight low in the state, courtesy of the ocean’s moderating influence. Winds light out of the south, 2-7 mph.
Surf/Beach: The Moderate Rip Current Risk in effect through 8 PM this evening has lifted for the overnight, dropping to Low risk for Tuesday. Surf holds around 2-3 feet tonight, easing to around 2 feet Tuesday. Water temps still upper 70s. Longshore current today was running moderate-to-strong north-to-south — swimmers were advised they could get carried down-beach quickly; that current relaxes as winds go light and shift out of the northwest overnight.
Active Hazards
| Coastal Flood Advisory (Minor) | Anne Arundel County (MDZ014) — 11 PM tonight to 7 AM EDT Tuesday |
| Coastal Flood Advisory (Minor) | Dorchester, Wicomico, Somerset counties — bay-side shoreline flooding possible around the overnight high tide |
Both advisories tie back to the same setup: tide levels running roughly a foot above normal, with the higher of the two daily tides landing in the late-night/early-morning window. Annapolis is the site most likely to actually reach minor flood stage. Havre de Grace and Bowley’s Quarters could also flirt with minor flooding at times through midweek, though they’re not under formal advisory tonight.
Severe Weather & Flooding
None expected tonight. No severe threat, no flash flood concern — this is about as tranquil as Maryland weather gets. The only