Baltimore's climate
Baltimore sits at the head of the Chesapeake Bay, which gives it a humid subtropical climate that leans continental in winter. Summers run hot and sticky, with July highs typically in the upper 80s°F and dew points that make it feel hotter than the thermometer says — the harbor and surrounding pavement hold heat well into the evening. Winters are milder than inland Maryland but still bring occasional Nor'easters that can drop significant snow on the city in a single event, alongside long stretches of gray, damp cold in the 30s and 40s°F.
Spring and fall are Baltimore's most comfortable stretches — mild days, cool nights, and the lowest humidity of the year, usually peaking in October for fall color and April/May for mild, dry stretches.
Best time to visit Baltimore
- April–May: mild temperatures, blooming trees around the Inner Harbor, lower humidity.
- September–October: warm days, crisp nights, and the tail end of hurricane season passing without much local impact most years.
- June–August: hot and humid — plan for afternoon thunderstorms and pack light layers for aggressive AC indoors.
- December–February: cold, occasionally snowy; watch NWS alerts above for winter storm warnings.
Planning a trip elsewhere in the state? See weather in Ocean City or browse weather for every Maryland city.
Live data above is sourced from Open-Meteo and the National Weather Service and refreshes on page load. This site is independent and not affiliated with NOAA, NWS, or the City of Baltimore.