Climate averages 1991–2020
Wilmington (Delaware), United States weather
in March.
A cool, wet month: the 9th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Wilmington (Delaware), United States: daytime highs average 10.6°C and nights cool to about 1.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 105 mm of rain on roughly 11 days, which makes March a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average March day.
The nearest other city in this atlas is Philadelphia (40 km away). In March its highs average 10.7°C, about as warm as Wilmington (Delaware), United States, with 104 mm of rain.
Among the 498 cities listed in the United States, Wilmington (Delaware), United States ranks joint 349th of 498 for the warmest March highs and joint 383rd of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Wilmington (Delaware), United States is 4.4°C cooler than that mean.
From March to April, average highs rise by 6.4°C to 16.9°C, and monthly rainfall falls from 105 mm to 92 mm.
The annual picture
March 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
Wilmington (Delaware), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.5°C-3.0°C | -3.0°C | 82 | 9.2 | 9.710 h |
| February | 6.1°C-2.4°C | -2.4°C | 76 | 8.7 | 10.711 h |
| March, selected | 10.6°C1.2°C | 1.2°C | 105 | 10.7 | 11.912 h |
| April | 16.9°C6.8°C | 6.8°C | 92 | 10.5 | 13.213 h |
| May | 22.0°C12.4°C | 12.4°C | 89 | 10.8 | 14.314 h |
| June | 26.8°C17.7°C | 17.7°C | 99 | 10.4 | 14.915 h |
| July | 29.3°C20.7°C | 20.7°C | 99 | 10.9 | 14.715 h |
| August | 28.2°C19.9°C | 19.9°C | 100 | 10.4 | 13.714 h |
| September | 24.6°C16.3°C | 16.3°C | 107 | 9.6 | 12.512 h |
| October | 18.2°C10.0°C | 10.0°C | 91 | 8.1 | 11.211 h |
| November | 12.1°C4.1°C | 4.1°C | 75 | 7.9 | 10.010 h |
| December | 6.9°C-0.3°C | -0.3°C | 100 | 9.0 | 9.49 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
March in nearby cities
- Philadelphia in MarchUnited States · 40 kmHigh 10.7°C · Low 1.0°C · 104 mm rain
- Camden in MarchUnited States · 42 kmHigh 10.8°C · Low 1.0°C · 103 mm rain
- Cherry Hill in MarchUnited States · 49 kmHigh 10.7°C · Low 1.2°C · 103 mm rain
- Reading, United States in MarchUnited States · 73 kmHigh 9.7°C · Low -0.1°C · 99 mm rain
- Trenton in MarchUnited States · 86 kmHigh 10.2°C · Low 0.3°C · 106 mm rain
- Allentown in MarchUnited States · 96 kmHigh 9.1°C · Low -1.3°C · 103 mm rain
- Bethlehem, United States in MarchUnited States · 99 kmHigh 9.1°C · Low -1.4°C · 103 mm rain
- Baltimore in MarchUnited States · 105 kmHigh 10.9°C · Low 1.3°C · 114 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 Wilmington) is explained once on the Wilmington (Delaware), United States year overview and on the Sources, method and limits page.