Sterling weather in July: Sterling, Virginia: normal highs, lows, rain and records for July
Sterling in July has a normal high of 88°F and a normal low of 67°F, a daily mean of 77°F, holding near 88°F all month. Measurable precipitation falls on 11 days in a normal July, 4.15 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 19°C, 105 mm of precipitation in July.
- NOAA stationWashington Dulles International Airport
- Station IDUSW00093738
- Location38.94°N 77.46°W
- Elevation290 ft (88 m)
- From the center5 miles
- Population (census place)31,251
- Jan 43° 25°
- Feb 46° 27°
- Mar 55° 34°
- Apr 67° 43°
- May 75° 53°
- Jun 83° 62°
- Jul 88° 67°
- Aug 86° 65°
- Sep 79° 58°
- Oct 68° 45°
- Nov 57° 36°
- Dec 47° 29°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sterling in July?
The normal high is 88°F and the normal low 67°F, for a daily mean of 77.2°F. July is 4.7°F warmer than June and 1.5°F warmer than August. July is the warmest month of the year in Sterling and the 3rd wettest. Across the month the normal high rises 1°F, from 87°F on July 1 to 88°F on July 31. 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 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 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 87°F | 66°F | 36% | 22% |
| July 8 | 88°F | 67°F | 35% | 21% |
| July 15 | 88°F | 67°F | 35% | 21% |
| July 22 | 88°F | 67°F | 34% | 21% |
| July 31 | 88°F | 67°F | 33% | 20% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 12, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 2 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 3 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 4 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 5 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 6 | 87°F | 66°F | 36% | 22% | 14 h 50 min |
| July 7 | 88°F | 67°F | 36% | 22% | 14 h 50 min |
| July 8 | 88°F | 67°F | 35% | 21% | 14 h 50 min |
| July 9 | 88°F | 67°F | 35% | 21% | 14 h 50 min |
| July 10 | 88°F | 67°F | 35% | 21% | 14 h 50 min |
| July 11 | 88°F | 67°F | 35% | 21% | 14 h 40 min |
| July 12 | 88°F | 67°F | 35% | 21% | 14 h 40 min |
| July 13 | 88°F | 67°F | 35% | 21% | 14 h 40 min |
| July 14 | 88°F | 67°F | 35% | 21% | 14 h 40 min |
| July 15 | 88°F | 67°F | 35% | 21% | 14 h 40 min |
| July 16 | 88°F | 67°F | 34% | 21% | 14 h 40 min |
| July 17 | 88°F | 67°F | 34% | 20% | 14 h 40 min |
| July 18 | 88°F | 67°F | 34% | 20% | 14 h 40 min |
| July 19 | 88°F | 67°F | 34% | 20% | 14 h 30 min |
| July 20 | 88°F | 67°F | 34% | 20% | 14 h 30 min |
| July 21 | 88°F | 67°F | 34% | 20% | 14 h 30 min |
| July 22 | 88°F | 67°F | 34% | 21% | 14 h 30 min |
| July 23 | 88°F | 67°F | 34% | 21% | 14 h 30 min |
| July 24 | 88°F | 67°F | 34% | 21% | 14 h 30 min |
| July 25 | 88°F | 67°F | 34% | 21% | 14 h 30 min |
| July 26 | 88°F | 67°F | 34% | 20% | 14 h 20 min |
| July 27 | 88°F | 67°F | 34% | 20% | 14 h 20 min |
| July 28 | 88°F | 67°F | 34% | 20% | 14 h 20 min |
| July 29 | 88°F | 67°F | 34% | 20% | 14 h 20 min |
| July 30 | 88°F | 67°F | 34% | 20% | 14 h 20 min |
| July 31 | 88°F | 67°F | 33% | 20% | 14 h 10 min |
- Normal high
- 88°FJuly average
- Normal low
- 67°FJuly average
- Precipitation
- 4.15 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 13
- 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
- 28
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093738; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sterling in July?
On a given July day the chance of 0.01 inch or more is 35% on average, highest around July 1 (36%). In all, 4.15 in falls on 11 days of a normal July, 1 of them with an inch or more.
In a normal July in Sterling, 13 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093738.
How humid and windy is Sterling in July?
At 3 p.m. the normal temperature is 85°F with 51% relative humidity and a dew point of 65°F; at 6 a.m. it is 69°F with 89% humidity. The wind averages 5.6 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 69°F | 65°F | 89% | 3.3 mph | 37% |
| 9 a.m. | 78°F | 66°F | 67% | 6.5 mph | 38% |
| noon | 83°F | 65°F | 54% | 7.5 mph | – |
| 3 p.m. | 85°F | 65°F | 51% | 8.1 mph | – |
| 6 p.m. | 82°F | 65°F | 56% | 7.5 mph | 24% |
| 9 p.m. | 75°F | 66°F | 74% | 4.4 mph | 34% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093738. 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 Sterling?
The warmest July temperature on this station's record (since 1960) is 105°F, on July 22, 2011; the coldest is 41°F, on July 1, 1988. The wettest July brought 11.21 in (2018).
The July mean against the 1991-2020 normal of 77.2°F: 2021 78.3°F (+1.1), 2022 78.1°F (+0.9), 2023 80.1°F (+2.9), 2024 80.8°F (+3.6), 2025 80.1°F (+2.9), 2026 78.7°F (+1.5). 6 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.3°F | +1.1°F | 2.43 in |
| 2022 | 78.1°F | +0.9°F | 5.23 in |
| 2023 | 80.1°F | +2.9°F | 5.09 in |
| 2024 | 80.8°F | +3.6°F | 2.66 in |
| 2025 | 80.1°F | +2.9°F | 2.94 in |
| 2026 | 78.7°F | +1.5°F | 5.34 in |
Source: records: ACIS, station USW00093738; recent months: ACIS, station USW00093738. Records and recent months use complete months only.
How does July in Sterling compare across Virginia?
Across the 81 places PlainClimate covers in Virginia, July normal highs run from 81°F in Floyd to 93°F in Chesapeake; Sterling's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.