Our Proprietary 10-Day Forecast

Loading Forecast...

Current warnings over Great Falls, Virginia
Add warnings to your site:
<div style='text-align:center'><a href='https://f5wx.com/warnings/'>
  <img src="https://www.f5wx.com/warnings/warningsF5.gif" alt='F5Weather Warnings Map' />
<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.

Do not use our graphics for protection of life or property. Delays in image processing are possible.

You are free to embed our warning graphics into your web site using the code above. We just ask that you keep a link and credit to F5Weather as a source for the graphics.


View more weather maps.

Zoom Out

Current radar over Great Falls, Virginia red dot
Add this radar to your site:
<div style='text-align:center'><a href='https://f5wx.com/radar/'>
<img src='https://www.f5wx.com/radar/live/radar_midatlantic.gif' alt='F5Weather Radar'>
<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.

View more weather maps.

Zoom Out

Current satellite over Great Falls, Virginia red dot
Add this satellite to your site:
<div style='text-align:center'><a href='https://f5wx.com/satellite/'>
<img src='https://www.f5wx.com/satellite/live/ir_midatlantic.gif' alt='F5Weather Satellite'>
<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.

View more weather maps.

Zoom Out

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.

View more weather maps.

Zoom Out

Temperatures right now near Great Falls, 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 Great Falls, VA please see our current conditions data on the left and right side of this page, or go to our current conditions page.

View more weather maps.

Zoom Out

Surface wind speed map over Great Falls, 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 Great Falls, VA, see the current conditions data on the left and right side of this page, or go to our current conditions page.

View more weather maps.

Zoom Out

Regional 24 hour rainfall expected near Great Falls, 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.

View more weather maps.

Zoom Out

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.

View more weather maps.

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.

View more weather maps.

Atlantic Hurricane and Tropical Storm Tracking Map
Add this hurricane tracker to your site:
<div style='text-align:center'><a href='https://www.f5wx.com/models/hurricane/atlantic.png'>
<img src='https://www.f5wx.com/models/hurricane/atlantic.png' alt='F5Weather Atlantic Hurricane and Tropical Storm Tracking Map'>
<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.

View more weather maps.

F5Weather Maps splash

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.
 
See the latest forecast data as the models update.
 
F5Weather Maps

Climate Summary
(made with AI, use with caution)
Great Falls, VA Climate Summary

General Climate

    •   Great Falls, Virginia experiences a humid subtropical climate, characterized by hot, humid summers and mild winters.
    •   The town enjoys four distinct seasons, with each season offering unique weather patterns and activities.

Temperature

    •   Average Annual Temperature: 55.4°F (13°C)
    •   Average Summer Temperature: 77.8°F (25.4°C)
    •   Average Winter Temperature: 34.6°F (1.4°C)
    •   Highest Recorded Temperature: 105°F (40.6°C)
    •   Lowest Recorded Temperature: -14°F (-25.6°C)

Precipitation

    •   Average Annual Precipitation: 40.8 inches (103.6 cm)
    •   Average Snowfall: 19.5 inches (49.5 cm)
    •   Driest Month: October (2.4 inches or 6.1 cm)
    •   Wettest Month: July (4.9 inches or 12.4 cm)

Humidity

    •   Average Annual Humidity: 68%
    •   Highest Humidity: July (77%)
    •   Lowest Humidity: February (57%)

Wind

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

Sunshine

    •   Average Annual Sunshine: 2,600 hours
    •   Sunniest Month: July (310 hours)
    •   Cloudiest Month: December (160 hours)

Climate Highlights

    •   Great Falls experiences a relatively mild climate compared to other parts of the United States.
    •   The town's proximity to the Chesapeake Bay and Atlantic Ocean helps moderate temperatures, resulting in cooler summers and warmer winters.
    •   Great Falls receives ample precipitation throughout the year, with the wettest months being July and August.
    •   The town is occasionally affected by tropical storms and hurricanes, which can bring heavy rainfall and strong winds.
    •   Great Falls residents enjoy a variety of outdoor activities year-round, thanks to the town's mild climate.

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

    •   Great Falls Park encompasses 800 acres of pristine Potomac River gorge, home to diverse flora and fauna.

    •   The park is a sanctuary for bald eagles, which nest along the riverbanks.

    •   The Great Falls of the Potomac is a spectacular 76-foot waterfall that has carved a deep canyon over millions of years.

Science

    •   The U.S. Geological Survey maintains a stream gauge at Great Falls, providing valuable data on river flow and water quality.

    •   The park is a popular research site for geologists studying the region's volcanic and sedimentary history.

    •   The nearby National Institute of Standards and Technology (NIST) conducts cutting-edge research in measurement science and engineering.

Personalities

    •   George Washington surveyed the Great Falls in 1751 and recognized its potential for water power.

    •   Thomas Jefferson visited the falls in 1784 and described it as \

Tourist Attractions
1. Great Falls National Park: This stunning park offers breathtaking views of the Potomac River as it cascades over a series of waterfalls. Visitors can hike along scenic trails, enjoy a picnic, or take a boat tour to see the falls from a different perspective.

2. Wolf Trap National Park for the Performing Arts: This renowned performing arts center hosts a wide variety of concerts, plays, and dance performances throughout the year. The park also features beautiful gardens and walking trails, making it a great place to spend an afternoon or evening.

3. Meadowlark Botanical Gardens: These beautiful gardens are home to a wide variety of plants, including flowers, trees, and shrubs. Visitors can stroll through the gardens, enjoy a picnic, or take a guided tour. The gardens also host a variety of events throughout the year, such as concerts and art exhibitions.

Nearby Cities:

Wolf Trap, VA
Reston, VADranesville, VA
Potomac, MDTravilah, MD
Tysons Corner, VAHerndon, VA
Sugarland Run, VAVienna, VA
Lowes Island, VANorth Potomac, MD
Cabin John, MDOak Grove, VA
McLean, VAPimmit Hills, VA
Dunn Loring, VAIdylwood, VA
Baltimore, MD
Washington, DCRichmond, VA
Arlington, VAAlexandria, VA
Columbia, MDReading, PA
Germantown, MDWilmington, DE
Silver Spring, MDCentreville, VA
Frederick, MD