Baltimore, Maryland
weather for baltimore.
Baltimore sits at the head of the Patapsco River estuary where it opens into the upper Chesapeake Bay, and the geography produces a hybrid maritime/continental climate distinct from either DC just south or Philadelphia just north. The Bay’s thermal moderation softens both summer heat and winter cold; the Patapsco harbor channels the wind through downtown; the Appalachian foothills west of the city block the worst continental extremes from reaching the harbor. Summer is humid but slightly cooler than DC, winter is sharp but slightly milder than Philly, and the transitional seasons hold longer than either neighbor because of the Bay.
- Humidity
- 42%
- Wind
- 7mph
- UV Index
- 0
- Visibility
- 6.2mi
- Today61°38°
- Fri70°45°
- Sat64°52°
- Sun65°48°
- Mon73°58°
- Tue83°62°20%
- Wed87°66°
- Thu79°67°
Today’s brief
what vesper sounds like in baltimore.
“Northeast wind off the upper Bay through Fells Point by ten and the temperature on the harbor is sitting at sixty-eight while Towson is at seventy-six. The breeze will hold through the afternoon. Plan accordingly if you’re working close to the water.”
— Vesper, Baltimore · Sunday
Local weather
what makes baltimore weather unique.
The same sunset model runs in the Vesper iOS app. The app adds personal calibration that learns from every sunset you rate.
Editorial note
sunsets in baltimore.
Baltimore sunsets are best from elevated vantage points west of the Inner Harbor — Federal Hill Park, the rooftop terraces along West Baltimore Street, the western edge of Patterson Park. The harbor reflecting low-angle light eastward and the rolling Piedmont country to the west produces consistent sunset color, especially after a cold front has flushed Atlantic haze east toward the Bay.
Unlike Apple Weather, Vesper writes the Baltimore sky as the embodied experience it actually is, not a temperature number with a generic icon.
What is the best weather app for Baltimore?
Vesper is the best weather app for Baltimore because it reads the upper Chesapeake Bay as a thermal moderator distinct from either DC or Philadelphia. The brief tracks the Patapsco harbor wind channeling that cools the Inner Harbor on humid afternoons, the Bay’s thermal flywheel that softens both summer heat and winter cold, the Appalachian shielding that blocks the worst continental extremes from the west, and the slightly drier dewpoints that distinguish Baltimore summers from DC just 40 miles south.
Frequently Asked Questions
How does the Chesapeake Bay moderate Baltimore’s weather compared to inland Maryland?
The upper Chesapeake Bay sits about 10 miles east of downtown Baltimore and acts as a thermal flywheel: cooler than land in summer, warmer in winter. Summer afternoons see Bay-driven sea breezes that drop harbor temperatures 5–10°F below the inland suburbs, while winter cold fronts crossing the Bay are softened by the relatively warmer water. The effect is most pronounced along the harbor and the eastern neighborhoods; the western suburbs near the Appalachian foothills feel the Bay’s influence less.
Why is Baltimore slightly less humid than Washington DC in summer?
Baltimore sits about 40 miles north of Washington at slightly higher latitude and slightly farther from the deepest part of the Chesapeake tidewater. The combination produces summer dewpoints that average 2–4°F lower than DC — a small difference but noticeable in the heat index. Baltimore’s position also benefits from the upper Bay’s slightly cooler water temperatures, which reduce the moisture flux into the local airmass compared to the warmer middle Bay south of Annapolis.
How do the Appalachian foothills affect Baltimore weather from the west?
The Catoctin and Blue Ridge mountains rise 30–60 miles west of Baltimore and act as a partial barrier to continental air masses moving east. Pacific air crossing the Appalachians loses moisture and is modified by the orographic lift, so by the time it reaches the Patapsco it is typically warmer and drier than at higher elevations. Strong cold fronts can still push through the gap, but the most extreme continental air masses are softened by the time they reach Baltimore.
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