Wilmington weather in July: Wilmington, Delaware: normal highs, lows, rain and records for July
Wilmington in July has a normal high of 87°F and a normal low of 68°F, a daily mean of 78°F, holding near 87°F all month. Measurable precipitation falls on 10 days in a normal July, 4.41 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 20°C, 112 mm of precipitation in July.
- NOAA stationWilmington Airport
- Station IDUSW00013781
- Location39.67°N 75.60°W
- Elevation79 ft (24 m)
- From the center6 miles
- Population73,176
- Jan 41° 26°
- Feb 44° 27°
- Mar 53° 34°
- Apr 64° 44°
- May 74° 53°
- Jun 82° 63°
- Jul 87° 68°
- Aug 85° 67°
- Sep 79° 59°
- Oct 67° 47°
- Nov 56° 37°
- Dec 46° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Wilmington in July?
The normal high is 87°F and the normal low 68°F, for a daily mean of 77.6°F. July is 5.0°F warmer than June and 1.8°F warmer than August. July is the warmest month of the year in Wilmington and the 2nd wettest. From one year to the next July's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Julys in three average between 75°F and 80°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 86°F | 67°F | 33% | 21% |
| July 8 | 87°F | 68°F | 32% | 21% |
| July 15 | 87°F | 69°F | 32% | 21% |
| July 22 | 87°F | 69°F | 32% | 22% |
| July 31 | 86°F | 68°F | 32% | 21% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 10, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 86°F | 67°F | 33% | 21% | 15 h |
| July 2 | 86°F | 67°F | 33% | 21% | 15 h |
| July 3 | 86°F | 67°F | 33% | 21% | 15 h |
| July 4 | 87°F | 68°F | 33% | 21% | 14 h 50 min |
| July 5 | 87°F | 68°F | 33% | 21% | 14 h 50 min |
| July 6 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 7 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 8 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 9 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 10 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 11 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 12 | 87°F | 68°F | 32% | 21% | 14 h 50 min |
| July 13 | 87°F | 69°F | 32% | 21% | 14 h 50 min |
| July 14 | 87°F | 69°F | 32% | 21% | 14 h 50 min |
| July 15 | 87°F | 69°F | 32% | 21% | 14 h 40 min |
| July 16 | 87°F | 69°F | 31% | 21% | 14 h 40 min |
| July 17 | 87°F | 69°F | 31% | 21% | 14 h 40 min |
| July 18 | 87°F | 69°F | 32% | 21% | 14 h 40 min |
| July 19 | 87°F | 69°F | 32% | 21% | 14 h 40 min |
| July 20 | 87°F | 69°F | 32% | 21% | 14 h 40 min |
| July 21 | 87°F | 69°F | 32% | 21% | 14 h 40 min |
| July 22 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 23 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 24 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 25 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 26 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 27 | 87°F | 69°F | 32% | 22% | 14 h 30 min |
| July 28 | 87°F | 69°F | 32% | 22% | 14 h 20 min |
| July 29 | 86°F | 68°F | 32% | 22% | 14 h 20 min |
| July 30 | 86°F | 68°F | 32% | 22% | 14 h 20 min |
| July 31 | 86°F | 68°F | 32% | 21% | 14 h 20 min |
- Normal high
- 87°FJuly average
- Normal low
- 68°FJuly average
- Precipitation
- 4.41 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 10
- Daylight
- 15 h to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013781; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Wilmington in July?
On a given July day the chance of 0.01 inch or more is 32% on average, highest around July 1 (33%). In all, 4.41 in falls on 10 days of a normal July, 1 of them with an inch or more.
In a normal July in Wilmington, 10 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013781.
What are the records for July in Wilmington?
The warmest July temperature on Wilmington's official record (since 1894) is 103°F, on July 10, 1936; the coldest is 48°F, on July 1, 1988. The wettest July brought 14.13 in (1919).
The July mean against the 1991-2020 normal of 77.6°F: 2021 77.8°F (+0.2), 2022 79.3°F (+1.8), 2023 80.0°F (+2.4), 2024 79.1°F (+1.5), 2025 80.3°F (+2.7), 2026 78.4°F (+0.8). 6 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 77.8°F | +0.2°F | 4.77 in |
| 2022 | 79.3°F | +1.8°F | 4.10 in |
| 2023 | 80.0°F | +2.4°F | 8.85 in |
| 2024 | 79.1°F | +1.5°F | 1.56 in |
| 2025 | 80.3°F | +2.7°F | 6.73 in |
| 2026 | 78.4°F | +0.8°F | 8.32 in |
Source: records: ACIS, NWS threaded record ILGthr; recent months: ACIS, station USW00013781. Records and recent months use complete months only.
How does July in Wilmington compare across Delaware?
Across the 6 places PlainClimate covers in Delaware, July normal highs run from 87°F in Greenwood to 89°F in Newark; Wilmington's is 87°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.