Climate averages 1991–2020
Baltimore weather
in April.
A mild, wet month: the 7th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Baltimore: daytime highs average 17.2°C and nights cool to about 7.0°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 97 mm of rain on roughly 10 days, which makes April a wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 12 min on an average April day.
The nearest other city in this atlas is Columbia (Maryland), United States (20 km away). In April its highs average 17.1°C, about as warm as Baltimore, with 90 mm of rain.
Among the 498 cities listed in the United States, Baltimore ranks joint 309th of 498 for the warmest April highs and joint 346th of 498 for the driest April (rainfall, lowest first). The mean April high of those 498 cities is 19.4°C; Baltimore is 2.2°C cooler than that mean.
From April to May, average highs rise by 4.9°C to 22.2°C, and monthly rainfall falls from 97 mm to 96 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Baltimore climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.8°C-2.9°C | -2.9°C | 90 | 9.0 | 9.710 h |
| February | 6.4°C-2.5°C | -2.5°C | 84 | 9.2 | 10.711 h |
| March | 10.9°C1.3°C | 1.3°C | 114 | 10.5 | 11.912 h |
| April, selected | 17.2°C7.0°C | 7.0°C | 97 | 10.4 | 13.213 h |
| May | 22.2°C12.7°C | 12.7°C | 96 | 11.0 | 14.314 h |
| June | 27.0°C18.0°C | 18.0°C | 90 | 10.9 | 14.915 h |
| July | 29.6°C21.0°C | 21.0°C | 97 | 11.4 | 14.615 h |
| August | 28.6°C20.2°C | 20.2°C | 93 | 10.4 | 13.714 h |
| September | 24.8°C16.6°C | 16.6°C | 120 | 9.4 | 12.512 h |
| October | 18.6°C10.2°C | 10.2°C | 102 | 8.4 | 11.211 h |
| November | 12.3°C4.2°C | 4.2°C | 86 | 8.3 | 10.110 h |
| December | 7.1°C-0.4°C | -0.4°C | 109 | 9.6 | 9.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Columbia (Maryland), United States in AprilUnited States · 20 kmHigh 17.1°C · Low 7.3°C · 90 mm rain
- Silver Spring in AprilUnited States · 49 kmHigh 18.0°C · Low 7.3°C · 86 mm rain
- Washington in AprilUnited States · 57 kmHigh 18.8°C · Low 7.7°C · 86 mm rain
- Germantown in AprilUnited States · 58 kmHigh 17.7°C · Low 6.8°C · 87 mm rain
- Arlington (Virginia), United States in AprilUnited States · 62 kmHigh 18.3°C · Low 7.3°C · 86 mm rain
- Alexandria, United States in AprilUnited States · 66 kmHigh 18.7°C · Low 8.0°C · 85 mm rain
- Centreville in AprilUnited States · 86 kmHigh 18.2°C · Low 7.8°C · 86 mm rain
- Wilmington (Delaware), United States in AprilUnited States · 105 kmHigh 16.9°C · Low 6.8°C · 92 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Baltimore) is explained once on the Baltimore year overview and on the Sources, method and limits page.