Baltimore, MD Climate & Monthly Averages
The climate of Baltimore
Weather in Baltimore is shaped by its humid subtropical climate - expect hot, humid summers and generally mild winters. July afternoons typically reach 87°F (30°C), while January highs hover near 42°F (6°C). Annual precipitation averages 59.0 inches (1498 mm) over about 137 rainy days.
Climate quick facts
- Hottest month: July - highs near 87°F (30°C)
- Coldest month: January - highs near 42°F (6°C)
- Record high: 100°F (38°C) · Record low: -2°F (-19°C) (2015–2024)
- Wettest month: July (15 rainy days) · Sunniest: July (11.7 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 8 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 87°F (30°C) and overnight lows stay near 70°F (21°C). The coolest month is January, with typical highs of 42°F (6°C) and lows around 28°F (-2°C). Based on 2015–2024 weather data, temperatures have reached as high as 100°F (38°C) and dropped as low as -2°F (-19°C).
Rain, sun and snow
July is usually the wettest month. It brings about 7.5 inches (191 mm) of rain over 15 days, while November is the driest. July brings the most sunshine, averaging 11.7 hours of sun a day. Snow falls on about 8 days in a typical year, mostly from December through March.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 42° | 28° | 10 | 3.6 in | 6.0 h/day | 68% |
| February | 47° | 30° | 11 | 3.6 in | 7.0 h/day | 67% |
| March | 54° | 35° | 11 | 4.2 in | 8.0 h/day | 66% |
| April | 64° | 45° | 12 | 4.4 in | 9.2 h/day | 67% |
| May | 73° | 56° | 14 | 5.6 in | 9.7 h/day | 73% |
| June | 82° | 65° | 13 | 5.9 in | 11.3 h/day | 70% |
| July | 87° | 70° | 15 | 7.5 in | 11.7 h/day | 74% |
| August | 84° | 69° | 15 | 6.7 in | 10.8 h/day | 76% |
| September | 79° | 63° | 11 | 5.1 in | 8.9 h/day | 74% |
| October | 68° | 52° | 9 | 4.3 in | 8.0 h/day | 74% |
| November | 56° | 40° | 8 | 3.2 in | 7.5 h/day | 69% |
| December | 47° | 33° | 10 | 4.8 in | 6.0 h/day | 72% |
Baltimore month by month
Baltimore weather in January
January brings highs around 42°F (6°C), lows near 28°F (-2°C), about 10 wet days and roughly 3 snowy days - typically the coldest month of the year in Baltimore.
Baltimore weather in February
February brings highs around 47°F (8°C), lows near 30°F (-1°C), about 11 wet days and roughly 3 snowy days.
Baltimore weather in March
March brings highs around 54°F (12°C), lows near 35°F (2°C), about 11 wet days and roughly 2 snowy days.
Baltimore weather in April
April brings highs around 64°F (18°C), lows near 45°F (7°C), about 12 wet days.
Baltimore weather in May
May brings highs around 73°F (23°C), lows near 56°F (13°C), about 14 wet days.
Baltimore weather in June
June brings highs around 82°F (28°C), lows near 65°F (18°C), about 13 wet days.
Baltimore weather in July
July brings highs around 87°F (30°C), lows near 70°F (21°C), about 15 wet days - typically the hottest month and the wettest month and the sunniest month of the year in Baltimore.
Baltimore weather in August
August brings highs around 84°F (29°C), lows near 69°F (20°C), about 15 wet days.
Baltimore weather in September
September brings highs around 79°F (26°C), lows near 63°F (17°C), about 11 wet days.
Baltimore weather in October
October brings highs around 68°F (20°C), lows near 52°F (11°C), about 9 wet days.
Baltimore weather in November
November brings highs around 56°F (13°C), lows near 40°F (4°C), about 8 wet days - typically the driest month of the year in Baltimore.
Baltimore weather in December
December brings highs around 47°F (9°C), lows near 33°F (1°C), about 10 wet days.
Seasons in Baltimore
Spring (March through May)
Spring in Baltimore stays on the cool side of mild, with daytime highs averaging 64°F (18°C) and nights around 46°F (8°C); expect showers on roughly 37 days across the season.
Summer (June through August)
Summer in Baltimore runs hot, with daytime highs averaging 84°F (29°C) and nights around 68°F (20°C); expect showers on roughly 43 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Fall (September through November)
Fall in Baltimore is crisp but comfortable, with daytime highs averaging 67°F (20°C) and nights around 52°F (11°C); expect showers on roughly 28 days across the season.
Winter (December through February)
Winter in Baltimore runs cold, with daytime highs averaging 45°F (7°C) and nights around 30°F (-1°C); expect showers on roughly 30 days across the season, plus around 6 snowy days.
Climate questions, answered
What is the average temperature in Baltimore?
Is Baltimore hot in summer?
Is Baltimore cold in winter?
How many rainy days does Baltimore get in a year?
Best time to visit Baltimore
The best time to visit Baltimore is generally September to November and April, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 67°F (19°C).
Pack for Baltimore with lightweight, breathable clothing and strong sun protection for the hot months; a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 70°F (21°C).
Baltimore temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.