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Weather Conditions for Brentsville, Virginia : Prince William County
Issued: 7:53 am EDT Sep 2, 2026 Latitude: 38.6881733 Longitude: -77.4960991 View on Google Maps

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Today Tonight Thursday Friday Saturday Sunday Labor Day Tuesday
60% chance of thunderstorms on Today 60% chance of thunderstorms on Tonight 40% chance of thunderstorms on Thursday 50% chance of thunderstorms on Friday Mostly Sunny on Saturday Sunny on Sunday Mostly Sunny on Labor Day Partly Sunny on Tuesday
High: 91°F Low: 73°F High: 93°F High: 92°F High: 86°F High: 82°F High: 82°F High: 86°F
Low: 75°F Low: 70°F Low: 63°F Low: 60°F Low: 63°F  
Thunderstorms Thunderstorms Thunderstorms Thunderstorms Mostly Sunny Sunny Mostly Sunny Partly Sunny
Current Conditions at
MANASSAS - (KHEF)
72°
Clear
as of 6:56 PM EDST
Rel. Humidity: 94%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
3 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
QUANTICO MCAS - (KNYG)
75°
Clear
as of 6:56 PM EDST
Rel. Humidity: 83%
Dew Point: 70°F
Visibility: 9 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
5 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
FORT BELVOIR - (KDAA)
75°
Clear
as of 6:55 PM EDST
Rel. Humidity: 94%
Dew Point: 73°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
WASH-DULLES - (KIAD)
75°
Cloudy
as of 6:52 PM EDST
Rel. Humidity: 88%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
3 MPH
240° Southwest
Cloud Level(s): Few at 5000ft, Broken at 16000ft, Solid Overcast at 25000ft
60% chance of thunderstorms Today Today... Showers and thunderstorms likely, mainly between 2pm and 5pm. Partly sunny, with a high near 91. Calm wind becoming north around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

60% chance of thunderstorms Tonight Tonight... Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 73. Southeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

40% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 93. Heat index values as high as 102. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 40%.

40% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. West wind around 5 mph. Chance of precipitation is 40%.

50% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 92. Light northwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 50%.

30% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 86.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 63.

Sunny on Sunday Sunday... Sunny, with a high near 82.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 60.

Mostly Sunny on Labor Day Labor Day... Mostly sunny, with a high near 82.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 63.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 86.

Current Radar Image


Sun Almanac for Brentsville, Virginia
Astronomical Sunrise 05:10 AM?Astronomical sunrise occurs when the Sun is 18° below the horizon and the sky begins to brighten from a completly darkened state.
Nautical Sunrise 05:43 AM?Nautical sunrise (or nautical dawn) is the precise moment when the sun's center is 12° below the horizon in the morning. It marks the beginning of nautical twilight, allowing pilots/mariners to see the horizon.
Civil Sunrise 06:15 AM?Civil sunrise is the moment in the morning when the sun's center is 6° below the horizon. It marks the start of morning civil twilight, providing enough natural light for most, outdoor activities without artificial lighting. It typically occurs roughly 20-30 minutes before actual sunrise.
Sunrise 06:42 AM?Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. It marks the end of the twilight phase, often accompanied by distinct atmospheric colors.

Daylight: 12 Hours 54 Minutes?Daylight hours are the period of time between local sunrise and sunset, representing the daily portion of sunlight. These hours change in length based on season, Earth's tilt, and latitude.

Sunset 7:36 PM?The sunset is defined in astronomy as the moment the upper limb of the Sun disappears below the horizon. It marks the end of daylight and is often accompanied by distinct atmospheric colors. It also signals the beginning of twilight.
Civil Sunset 8:03 PM?Civil sunset (or evening civil twilight) occurs when the center of the sun is 6° below the horizon, marking the end of the brightest twilight phase. It typically occurs roughly 20-30 minutes after sunset, providing enough light for most outdoor activities to continue without artificial light.
Nautical Sunset 8:35 PM?Nautical sunset occurs when the sun's center is 12° below the horizon, marking the end of nautical twilight. This phase, following civil twilight, allows the horizon to remain visible, enabling mariners to take accurate star sights for navigation. The sky is dark, but some ambient light remains
Astronomical Sunset 9:08 PM?Astronomical sunrise occurs when the Sun drops to 18° below the horizon. This causes the sky to enter a completly darkened state.

Civil Rise to Set: 13 Hours 48 Minutes
Nautical Rise to Set: 14 Hours 52 Minutes
Astro Rise to Set: 15 Hours 58 Minutes

Click for yearly Sun Almanac for Brentsville
Moon Almanac for Brentsville, Virginia
Moon Phase: Last Quarter
Moon Illumination: 42%
Moon Age: 22.8 Days
Moon is currently below the horizon
Distance from Moon to Earth: 225,842 miles
Upcoming Lunar Events for
Brentsville:
Next EventEvent TimeIllum

Moonrise:12:04 am Sat40.3%
High Moon:08:05 am Sat36.5%
Moonset:04:04 pm Sat32.9%
New Moon: Wed Aug 12
First Quarter: Wed Aug 19
Full Moon: Fri Aug 28
Last Quarter: Fri Sep 4
New Moon: Thu Sep 10
Click for Monthly Moon Almanac
Virginia's Current Temperatures
Virginia's Current Temperature Map


Virginia's Satellite ImageVirginia Satellite Image

Virginia's Current Wind DirectionVirginia's Current Wind Direction

National Summary
of upper and lower values of current conditions amongst 7039 locations
in the contiguous United States
High
Temp
106° Gila Bend (Aaf), Arizona
and 1 other location
Low
Temp
46° Mullan Pass, Idaho
Wind
Speed
33mph Tooele, Utah
Wind
Gust
45mph Marshfield, Wisconsin
and 1 other location
Heat
Index
118° Corning Municipal A/P, Arkansas
High
Pressure
30.69Hg Salida Mountain, Colorado
Low
Pressure
29.72Hg Nellis AFB, Nevada
and 4 other locations
# Locations Reporting Rain 55
# Locations Reporting Thunderstorms / Lightning 32
# Locations Reporting Fog 3
Average Temperature in the Contiguous USA 84°
Virginia State Summary
of upper and lower values of current conditions amongst 64 locations
in Virginia
High
Temp
88° Fort Eustis
and 2 other locations
Low
Temp
68° Hot Springs
Wind
Speed
21mph Franklin/J B Rose
Wind
Gust
33mph Roanoke
Heat
Index
100° Langley AFB
and 1 other location
High
Pressure
30.13Hg Marion/Wytheville
and 1 other location
Low
Pressure
29.84Hg Fort Belvoir
Average temperature in Virginia 77°
# Locations Reporting Rain 8
# Locations Reporting Thunderstorms 4
# Locations Reporting MVFR
(Marginal Visual Flight Rules)
1
# Locations Reporting VFR
(Visual Flight Rules)
63