Our Proprietary 10-Day Forecast

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Current warnings over Chantilly, Virginia
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Chantilly, Virginia red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Chantilly, Virginia red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Fairfax County, VA

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Chantilly, Virginia

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Chantilly, VA please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Chantilly, VA

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Chantilly, VA, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Chantilly, Virginia

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Fairfax County, Virginia

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Climate Summary for Chantilly, VA

General Climate


Chantilly, Virginia experiences a humid continental climate characterized by hot, humid summers and cold, snowy winters. The city is located in USDA hardiness zone 7a, indicating a generally mild climate with an average annual temperature of 55.9°F (13.3°C).

Temperature


    •   Average Annual Temperature: 55.9°F (13.3°C)
    •   Average Summer Temperature (June-August): 77.6°F (25.3°C)
    •   Average Winter Temperature (December-February): 36.4°F (2.4°C)
    •   Record High Temperature: 109°F (42.8°C)
    •   Record Low Temperature: -15°F (-26.1°C)

Precipitation


    •   Average Annual Precipitation: 41.6 inches (105.7 centimeters)
    •   Average Snowfall: 21.6 inches (54.9 centimeters)
    •   Wettest Month: May (4.5 inches or 11.4 centimeters)
    •   Driest Month: October (2.6 inches or 6.6 centimeters)

Humidity


    •   Average Annual Humidity: 72%
    •   Highest Humidity: July (78%)
    •   Lowest Humidity: February (64%)

Wind


    •   Average Wind Speed: 9.4 mph (15.1 km/h)
    •   Prevailing Wind Direction: Northwest

Sunshine


    •   Average Annual Sunshine: 2,620 hours
    •   Sunniest Month: July (300 hours)
    •   Cloudiest Month: December (160 hours)

Climate Extremes


    •   Heat Waves: Heat waves with temperatures exceeding 90°F (32.2°C) are common during the summer months.
    •   Cold Spells: Cold spells with temperatures below freezing occur frequently during the winter months.
    •   Thunderstorms: Chantilly experiences occasional thunderstorms throughout the year, with the highest frequency during the summer months.
    •   Blizzards: Blizzards with heavy snowfall and strong winds can occur during the winter months, causing significant disruptions.

Overall, Chantilly, Virginia has a humid continental climate with hot, humid summers, cold, snowy winters, and moderate precipitation throughout the year.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Chantilly is home to the Chantilly Regional Park, a 740-acre oasis with diverse ecosystems, including wetlands, forests, and meadows.

    •   The park is a haven for birdwatchers, with over 200 species spotted, including great blue herons and bald eagles.

    •   The park's Lake Accotink is a popular spot for fishing, boating, and kayaking.

Science

    •   Chantilly is the birthplace of the National Reconnaissance Office (NRO), the U.S. intelligence agency responsible for satellite reconnaissance.

    •   The NRO's headquarters, known as \

Tourist Attractions
1.Steven F. Udvar-Hazy Center:

This annex of the National Air and Space Museum houses an extensive collection of aircraft and spacecraft, including the Space Shuttle Discovery, the Concorde, and the Enola Gay.

2.Manassas National Battlefield Park:

This park preserves the site of two major battles of the Civil War, the First Battle of Manassas (Bull Run) and the Second Battle of Manassas.

3.Chantilly National Battlefield:

This park commemorates the Battle of Chantilly, which was fought in September 1862 and was the last major battle of the American Civil War in Northern Virginia.

Nearby Cities:

Greenbriar, VA
Oak Hill, VAFloris, VA
Centreville, VASouth Riding, VA
Herndon, VAOak Grove, VA
Yorkshire, VAOakton, VA
Reston, VAFairfax, VA
Loch Lomond, VAManassas Park, VA
Sudley, VASterling, VA
Fairfax Station, VAWolf Trap, VA
Baltimore, MD
Washington, DCRichmond, VA
Arlington, VAAlexandria, VA
Columbia, MDGermantown, MD
Wilmington, DESilver Spring, MD
Frederick, MDWaldorf, MD
Glen Burnie, MD