Climate averages 1991–2020
Wilmington (Delaware), United States weather
in June.
A warm, wet month: the 3rd warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Wilmington (Delaware), United States: daytime highs average 26.8°C and nights cool to about 17.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 99 mm of rain on roughly 10 days, which makes June a wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 56 min on an average June day.
The nearest other city in this atlas is Philadelphia (40 km away). In June its highs average 27.3°C, about as warm as Wilmington (Delaware), United States, with 97 mm of rain.
Among the 498 cities listed in the United States, Wilmington (Delaware), United States ranks joint 284th of 498 for the warmest June highs and joint 327th of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; Wilmington (Delaware), United States is 1.1°C cooler than that mean.
From June to July, average highs rise by 2.5°C to 29.3°C, and monthly rainfall stays at 99 mm.
The annual picture
June 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 | 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, selected | 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
June in nearby cities
- Philadelphia in JuneUnited States · 40 kmHigh 27.3°C · Low 17.6°C · 97 mm rain
- Camden in JuneUnited States · 42 kmHigh 27.1°C · Low 17.5°C · 95 mm rain
- Cherry Hill in JuneUnited States · 49 kmHigh 26.9°C · Low 17.6°C · 95 mm rain
- Reading, United States in JuneUnited States · 73 kmHigh 27.0°C · Low 16.8°C · 96 mm rain
- Trenton in JuneUnited States · 86 kmHigh 26.8°C · Low 16.9°C · 102 mm rain
- Allentown in JuneUnited States · 96 kmHigh 26.2°C · Low 15.6°C · 103 mm rain
- Bethlehem, United States in JuneUnited States · 99 kmHigh 26.2°C · Low 15.6°C · 103 mm rain
- Baltimore in JuneUnited States · 105 kmHigh 27.0°C · Low 18.0°C · 90 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.