The hottest month in Baltimore is typically July, with daytime highs averaging around 30.6°C (87°F), based on 10 years of historical weather data. Overnight lows during this period average near 21.5°C (71°F).

What is the coldest month in Baltimore?

The coldest month in Baltimore is typically January, with overnight lows averaging around -2.3°C (28°F) and daytime highs near 5.6°C (42°F), based on 10 years of historical weather data. Freezing overnight temperatures are common during this month, so plan for icy conditions in the early morning.

Does Baltimore have a rainy season?

Baltimore doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. July is the wettest month on average (about 204 mm), while November is the driest (about 81 mm).

What's the best time of year to visit Baltimore?

The best time to visit Baltimore is typically September to October, when daytime highs average a comfortable 22.9°C (73°F). Rainfall during this window averages around 126 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Is Baltimore's air quality safe right now?

As of the latest reading, Baltimore's air quality index (AQI) is 25, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.

Atmospheric Details

Wind

4 km/h

WSW · Light Breeze · Max 10 km/h

Humidity

82 %

High · feels muggy

UV Index

High

Visibility

14 km

Excellent

Pressure

1010 hPa

Stable

Dew Point

22°C

Very humid

Today vs Normal

26°C0° below normal

The long-term average high for today is 26°C.

16 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

Red = above normal, blue = at or below · last 12 days

Air Quality

Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Health & Activity Advice

✅ Good for Outdoors

UV index is 5 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Conditions are comfortable for outdoor activity at most points during the day today.