Baltimore, MD Weather
Baltimore hourly forecast: next 24 hours
Today's high of 76°F (24°C) is about 3°F (2°C) below the typical September high of 79°F (26°C).
Current conditions in detail
Baltimore weather tomorrow (Wednesday, September 16)
Tomorrow in Baltimore looks sunny, with a high of 80° and an overnight low of 65°. Rain is unlikely (5% chance). Winds top out near 11 mph, and the UV index reaches 7 (high).
Baltimore 14-day forecast
About the weather in Baltimore
Seasons are the whole story in Baltimore. The gap between an average July and an average January is 24°C - hot, humid summers and generally mild winters - which in practice means 87°F (30°C) afternoons at one end of the calendar and 42°F (6°C) at the other.
Baltimore weather: quick facts
- Hottest month: July - highs near 87°F (30°C)
- Coldest month: January - highs near 42°F (6°C)
- Decade extremes (2015-2024): 100°F (38°C) high · -2°F (-19°C) low
- Wettest month: July (15 rainy days) · Sunniest: July (11.7 h sun/day)
- Climate type: humid subtropical
- Annual swing: 24°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 8 days a year
- Months averaging 30°C or hotter: 1
- Average humidity: 71%
Temperatures through the year
Warmth peaks in July: highs of 87°F (30°C), lows of 70°F (21°C). January bottoms out at 42°F (6°C) in daylight, 28°F (-2°C) after dark. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 100°F (38°C) and the lowest daily minimum -2°F (-19°C). Snow falls on roughly 8 days a year, mostly December through March.
Rain, sun and snow
Overnight lows average at or below freezing for 2 months, January through February. July is the brightest month at 11.7 hours of sun a day, against an annual average of 8.7. Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is September through October.
Season by season
Spring (March through May)
Through spring, Baltimore is mild: 64°F (18°C) by day, 46°F (8°C) after dark, and rain falls on around 37 of the 90 days.
Summer (June through August)
Through summer, Baltimore runs hot: 84°F (29°C) by day, 68°F (20°C) after dark, and rain falls on around 43 of the 90 days. Daylight is generous - around 11.3 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
Fall (September through November)
Fall stays on the cool side of mild here - highs near 67°F (20°C), nights near 52°F (11°C), and expect showers on roughly 28 days across the season.
Winter (December through February)
Winter in Baltimore is brisk and 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 about 6 snowy days.
Average temperatures in Baltimore by month
| 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% |