Washington weather in July: Washington, District of Columbia: normal highs, lows, rain and records for July
Washington in July has a normal high of 90°F and a normal low of 72°F, a daily mean of 81°F, holding near 90°F all month. Measurable precipitation falls on 11 days in a normal July, 4.33 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 22°C, 110 mm of precipitation in July.
- NOAA stationWashington Reagan Airport
- Station IDUSW00013743
- Location38.85°N 77.03°W
- Elevation10 ft (3 m)
- From the center4 miles
- Population702,250
- Jan 45° 30°
- Feb 48° 32°
- Mar 57° 39°
- Apr 68° 48°
- May 77° 58°
- Jun 85° 68°
- Jul 90° 72°
- Aug 88° 71°
- Sep 81° 64°
- Oct 69° 52°
- Nov 58° 42°
- Dec 49° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Washington in July?
The normal high is 90°F and the normal low 72°F, for a daily mean of 81.0°F. July is 4.7°F warmer than June and 1.6°F warmer than August. July is the warmest month of the year in Washington and the wettest. From one year to the next July's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Julys in three average between 79°F and 83°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 89°F | 71°F | 35% | 21% |
| July 8 | 90°F | 72°F | 34% | 21% |
| July 15 | 90°F | 73°F | 33% | 21% |
| July 22 | 90°F | 73°F | 33% | 21% |
| July 31 | 89°F | 72°F | 32% | 21% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 13, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 89°F | 71°F | 35% | 21% | 14 h 50 min |
| July 2 | 89°F | 72°F | 35% | 21% | 14 h 50 min |
| July 3 | 89°F | 72°F | 35% | 21% | 14 h 50 min |
| July 4 | 89°F | 72°F | 35% | 21% | 14 h 50 min |
| July 5 | 89°F | 72°F | 35% | 21% | 14 h 50 min |
| July 6 | 90°F | 72°F | 34% | 21% | 14 h 50 min |
| July 7 | 90°F | 72°F | 34% | 21% | 14 h 50 min |
| July 8 | 90°F | 72°F | 34% | 21% | 14 h 50 min |
| July 9 | 90°F | 72°F | 34% | 21% | 14 h 50 min |
| July 10 | 90°F | 72°F | 34% | 21% | 14 h 40 min |
| July 11 | 90°F | 73°F | 34% | 21% | 14 h 40 min |
| July 12 | 90°F | 73°F | 34% | 21% | 14 h 40 min |
| July 13 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 14 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 15 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 16 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 17 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 18 | 90°F | 73°F | 33% | 21% | 14 h 40 min |
| July 19 | 90°F | 73°F | 33% | 21% | 14 h 30 min |
| July 20 | 90°F | 73°F | 33% | 21% | 14 h 30 min |
| July 21 | 90°F | 73°F | 33% | 21% | 14 h 30 min |
| July 22 | 90°F | 73°F | 33% | 21% | 14 h 30 min |
| July 23 | 90°F | 73°F | 33% | 21% | 14 h 30 min |
| July 24 | 90°F | 73°F | 32% | 21% | 14 h 30 min |
| July 25 | 90°F | 73°F | 32% | 21% | 14 h 20 min |
| July 26 | 90°F | 73°F | 32% | 21% | 14 h 20 min |
| July 27 | 90°F | 73°F | 32% | 21% | 14 h 20 min |
| July 28 | 89°F | 73°F | 32% | 21% | 14 h 20 min |
| July 29 | 89°F | 73°F | 32% | 21% | 14 h 20 min |
| July 30 | 89°F | 72°F | 32% | 21% | 14 h 20 min |
| July 31 | 89°F | 72°F | 32% | 21% | 14 h 10 min |
- Normal high
- 90°FJuly average
- Normal low
- 72°FJuly average
- Precipitation
- 4.33 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 14 h 50 min to 14 h 10 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 29
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013743; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Washington in July?
On a given July day the chance of 0.01 inch or more is 33% on average, highest around July 1 (35%). In all, 4.33 in falls on 11 days of a normal July, 1 of them with an inch or more.
In a normal July in Washington, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013743.
How humid and windy is Washington in July?
At 3 p.m. the normal temperature is 86°F with 51% relative humidity and a dew point of 66°F; at 6 a.m. it is 73°F with 80% humidity. The wind averages 7.8 mph, most often from the south-southwest in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 73°F | 67°F | 80% | 6.2 mph | – |
| 9 a.m. | 80°F | 67°F | 66% | 7.9 mph | – |
| noon | 85°F | 66°F | 54% | 8.8 mph | – |
| 3 p.m. | 86°F | 66°F | 51% | 9.6 mph | – |
| 6 p.m. | 83°F | 66°F | 56% | 9.7 mph | – |
| 9 p.m. | 79°F | 67°F | 68% | 7.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013743. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for July in Washington?
The warmest July temperature on Washington's official record (since 1871) is 106°F, on July 20, 1930; the coldest is 52°F, on July 31, 1895. The wettest July brought 11.06 in (1945).
The July mean against the 1991-2020 normal of 81.0°F: 2021 80.8°F (−0.2), 2022 81.1°F (+0.1), 2023 81.6°F (+0.6), 2024 83.7°F (+2.7), 2025 82.4°F (+1.4), 2026 81.7°F (+0.7). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 80.8°F | −0.2°F | 4.24 in |
| 2022 | 81.1°F | +0.1°F | 7.61 in |
| 2023 | 81.6°F | +0.6°F | 6.46 in |
| 2024 | 83.7°F | +2.7°F | 4.82 in |
| 2025 | 82.4°F | +1.4°F | 3.54 in |
| 2026 | 81.7°F | +0.7°F | 3.58 in |
Source: records: ACIS, NWS threaded record DCAthr; recent months: ACIS, station USW00013743. Records and recent months use complete months only.
How does July in Washington compare across District of Columbia?
Across the 1 places PlainClimate covers in District of Columbia, July normal highs run from 90°F in Washington to 90°F in Washington; Washington's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.