Baltimore, MD Weather Forecast & Climate Guide
Baltimore has a humid subtropical climate influenced by the Chesapeake Bay.
Climate type: Humid subtropical (Köppen Cfa)
Baltimore Climate Overview
Hot, humid summers. Cold winters with variable precipitation including snow, sleet, and freezing rain.
Nor'easters can bring significant snow. Summer thunderstorms are common.
Baltimore Weather by Season
spring
Spring is variable with cool, rainy weather in March giving way to warm, sunny days in May. Cherry blossoms peak in early April at the nearby D.C. Tidal Basin.
summer
Summers are hot and humid with highs in the mid-80s°F and frequent heat waves pushing past 90°F. Chesapeake Bay humidity makes the heat feel worse.
fall
Fall is Baltimore's best season — mild, sunny, dry, with peak foliage in mid-to-late October. Perfect outdoor weather around the Inner Harbor.
winter
Winters are cold with highs in the low 40s°F and occasional nor'easters dumping heavy snow. The 2009-10 winter delivered over 70 inches.
Baltimore Average Monthly Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 42° | 45° | 54° | 65° | 75° | 84° | 89° | 86° | 79° | 68° | 58° | 46° |
| Low °F | 26° | 28° | 35° | 45° | 54° | 64° | 69° | 67° | 60° | 48° | 39° | 31° |
Best Time to Visit Baltimore
Mid-September through October for crisp fall weather and foliage, or late April through May for spring blooms and mild temperatures.
Severe Weather Risks
- Nor'easters
- Heat waves
- Ice storms
- Hurricane remnants
- Severe thunderstorms
Weather Facts About Baltimore
- >Baltimore averages 21 inches of snow per year, but the 2009-10 "Snowmageddon" winter delivered 77 inches.
- >The Chesapeake Bay moderates Baltimore's climate but also boosts summer humidity considerably.
- >The city sits in a transition zone between northern and southern climate regimes, creating highly variable weather.
Baltimore Weather FAQ
When is the best time to visit Baltimore?
Mid-September through October delivers the best weather — mild temperatures, low humidity, sunshine, and fall foliage. May is also excellent with blooming trees and pleasant temperatures.
How much snow does Baltimore get?
About 21 inches per year on average, but variable — some winters see just a few inches while others (like 2009-10) deliver over 70. Nor'easters are the main winter snowmakers.
Is Baltimore humid in summer?
Yes. The Chesapeake Bay and the Gulf stream bring moisture, pushing dewpoints into the low 70s°F by July and August. Heat index values above 100°F are common during heat waves.
Does Baltimore get hurricanes?
Direct hits are rare, but remnants of tropical systems frequently bring heavy rain and flooding. Hurricane Isabel (2003) and Ida (2021) caused significant damage to the Baltimore region.