Quantico weather in August: Quantico, Virginia: normal highs, lows, rain and records for August
Quantico in August has a normal high of 86°F and a normal low of 69°F, a daily mean of 78°F, falling from 88°F on the 1st to 84°F by the 31st. Measurable precipitation falls on 8 days in a normal August, 4.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 21°C, 108 mm of precipitation in August.
- NOAA stationQuantico Marine Corps Air Station
- Station IDUSW00013773
- Location38.50°N 77.30°W
- Elevation10 ft (3 m)
- Population591
- Jan 45° 28°
- Feb 48° 30°
- Mar 56° 37°
- Apr 68° 47°
- May 76° 57°
- Jun 84° 66°
- Jul 88° 71°
- Aug 86° 69°
- Sep 80° 62°
- Oct 69° 50°
- Nov 58° 39°
- Dec 49° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Quantico in August?
The normal high is 86°F and the normal low 69°F, for a daily mean of 77.6°F. August is 1.7°F cooler than July and 6.8°F warmer than September. August is the 2nd warmest month of the year in Quantico and the 2nd wettest. Across the month the normal high falls 4°F, from 88°F on August 1 to 84°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 76°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 30%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 88°F | 71°F | 30% | 18% |
| August 8 | 87°F | 70°F | 29% | 17% |
| August 15 | 86°F | 69°F | 28% | 17% |
| August 22 | 86°F | 68°F | 27% | 16% |
| August 31 | 84°F | 67°F | 27% | 16% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 88°F | 71°F | 30% | 18% | 14 h 10 min |
| August 2 | 87°F | 70°F | 30% | 18% | 14 h 10 min |
| August 3 | 87°F | 70°F | 30% | 18% | 14 h 10 min |
| August 4 | 87°F | 70°F | 30% | 18% | 14 h 10 min |
| August 5 | 87°F | 70°F | 30% | 17% | 14 h |
| August 6 | 87°F | 70°F | 29% | 17% | 14 h |
| August 7 | 87°F | 70°F | 29% | 17% | 14 h |
| August 8 | 87°F | 70°F | 29% | 17% | 14 h |
| August 9 | 87°F | 70°F | 29% | 17% | 14 h |
| August 10 | 87°F | 70°F | 29% | 17% | 13 h 50 min |
| August 11 | 87°F | 70°F | 29% | 17% | 13 h 50 min |
| August 12 | 87°F | 70°F | 29% | 17% | 13 h 50 min |
| August 13 | 87°F | 70°F | 29% | 17% | 13 h 50 min |
| August 14 | 87°F | 69°F | 28% | 17% | 13 h 40 min |
| August 15 | 86°F | 69°F | 28% | 17% | 13 h 40 min |
| August 16 | 86°F | 69°F | 28% | 17% | 13 h 40 min |
| August 17 | 86°F | 69°F | 28% | 16% | 13 h 40 min |
| August 18 | 86°F | 69°F | 28% | 16% | 13 h 40 min |
| August 19 | 86°F | 69°F | 27% | 16% | 13 h 30 min |
| August 20 | 86°F | 69°F | 27% | 16% | 13 h 30 min |
| August 21 | 86°F | 69°F | 27% | 16% | 13 h 30 min |
| August 22 | 86°F | 68°F | 27% | 16% | 13 h 30 min |
| August 23 | 85°F | 68°F | 27% | 16% | 13 h 20 min |
| August 24 | 85°F | 68°F | 27% | 16% | 13 h 20 min |
| August 25 | 85°F | 68°F | 27% | 15% | 13 h 20 min |
| August 26 | 85°F | 68°F | 26% | 15% | 13 h 20 min |
| August 27 | 85°F | 68°F | 27% | 16% | 13 h 20 min |
| August 28 | 85°F | 67°F | 27% | 16% | 13 h 10 min |
| August 29 | 84°F | 67°F | 27% | 16% | 13 h 10 min |
| August 30 | 84°F | 67°F | 27% | 16% | 13 h 10 min |
| August 31 | 84°F | 67°F | 27% | 16% | 13 h 10 min |
- Normal high
- 86°FAugust average
- Normal low
- 69°FAugust average
- Precipitation
- 4.24 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 8
- Daylight
- 14 h 10 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013773; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Quantico in August?
On a given August day the chance of 0.01 inch or more is 28% on average, highest around August 1 (30%). In all, 4.24 in falls on 8 days of a normal August, 1 of them with an inch or more.
In a normal August in Quantico, 8 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013773.
How humid and windy is Quantico in August?
At 3 p.m. the normal temperature is 83°F with 56% relative humidity and a dew point of 65°F; at 6 a.m. it is 68°F with 85% humidity. The wind averages 6.6 mph, most often from the southeast 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. | 68°F | 64°F | 85% | 6.0 mph | 44% |
| 9 a.m. | 75°F | 65°F | 72% | 6.5 mph | 43% |
| noon | 80°F | 66°F | 61% | 7.4 mph | 34% |
| 3 p.m. | 83°F | 65°F | 56% | 7.2 mph | 37% |
| 6 p.m. | 80°F | 66°F | 62% | 6.5 mph | 49% |
| 9 p.m. | 74°F | 67°F | 78% | 6.2 mph | 56% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013773. 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 August in Quantico?
The warmest August temperature on this station's record (since 1945) is 104°F, on August 17, 1988; the coldest is 46°F, on August 29, 1986. The wettest August brought 11.77 in (1955).
The August mean against the 1991-2020 normal of 77.6°F: 2021 79.7°F (+2.1), 2022 79.0°F (+1.4), 2023 78.0°F (+0.4), 2026 80.2°F (+2.6). 4 of 4 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.7°F | +2.1°F | – |
| 2022 | 79.0°F | +1.4°F | 1.52 in |
| 2023 | 78.0°F | +0.4°F | 2.04 in |
| 2026 | 80.2°F | +2.6°F | – |
Source: records: ACIS, station USW00013773; recent months: ACIS, station USW00013773. Records and recent months use complete months only.
How does August in Quantico compare across Virginia?
Across the 81 places PlainClimate covers in Virginia, August normal highs run from 79°F in Floyd to 90°F in Chesapeake; Quantico's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.