Our Proprietary 10-Day Forecast

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Current warnings over Lorton, 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 Lorton, 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 Lorton, 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 Lorton, 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 Lorton, 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 Lorton, 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 Lorton, 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 Lorton, 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.
 
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  • 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)
Lorton, VA Climate Summary

General Climate

    •   Köppen Climate Classification

Humid subtropical climate (Cfa)

    •   Average Annual Temperature

57.5°F (14.2°C)

    •   Average Annual Precipitation

41.8 inches (106.2 cm)

    •   Average Annual Snowfall

17.7 inches (45 cm)

Temperature

    •   Average January Temperature

34.7°F (1.5°C)

    •   Average July Temperature

77.8°F (25.4°C)

    •   Record High Temperature

105°F (40.6°C)

    •   Record Low Temperature

-13°F (-25°C)

Precipitation

    •   Average Annual Precipitation

41.8 inches (106.2 cm)

    •   Average Number of Rainy Days

113

    •   Average Number of Snowy Days

10

    •   Record 24-Hour Precipitation

8.1 inches (20.6 cm)

Humidity

    •   Average Annual Relative Humidity

68%

    •   Average July Relative Humidity

75%

    •   Average January Relative Humidity

62%

Wind

    •   Average Annual Wind Speed

10 mph (16 km/h)

    •   Prevailing Wind Direction

West

Sunshine

    •   Average Annual Sunshine

2,600 hours

    •   Average July Sunshine

280 hours

    •   Average January Sunshine

180 hours

Climate Summary

Lorton, Virginia experiences a humid subtropical climate with hot, humid summers and mild, cool winters. The average annual temperature is 57.5°F (14.2°C), with average temperatures ranging from 34.7°F (1.5°C) in January to 77.8°F (25.4°C) in July. The average annual precipitation is 41.8 inches (106.2 cm), with most precipitation occurring during the summer months. The average annual snowfall is 17.7 inches (45 cm), with most snowfall occurring during the winter months. Lorton experiences an average of 113 rainy days and 10 snowy days per year. The average annual relative humidity is 68%, with higher humidity levels during the summer months. The average annual wind speed is 10 mph (16 km/h), with the prevailing wind direction being west. Lorton receives an average of 2,600 hours of sunshine per year, with the most sunshine occurring during the summer months.

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

    •   Lorton borders the Mason Neck National Wildlife Refuge, a haven for migratory birds and wildlife.

    •   The Occoquan River, a tributary of the Potomac, flows through Lorton, providing habitat for fish and aquatic life.

Science

    •   Lorton was home to the Lorton Reformatory, a former prison that housed inmates who participated in scientific experiments, including the Tuskegee Syphilis Study.

    •   The National Institute of Standards and Technology (NIST) has a research facility in Lorton, focusing on materials science and measurement technologies.

Personalities

    •   John Mason, an English explorer, established a colony on Mason Neck in the 17th century.

    •   George Mason, a Founding Father and author of the Virginia Declaration of Rights, owned land in Lorton.

    •   Charles Lindbergh, the aviator, lived in Lorton in the 1930s.

Tourist Attractions
1.Gunston Hall Plantation

(Mason Neck, VA): A historic plantation dating back to the 18th century, featuring the home of George Mason, a Founding Father of the United States.

2.Pohick Bay Regional Park

(Lorton, VA): A scenic park along the Potomac River, offering hiking trails, picnic areas, a boat launch, and a fishing pier.

3.Mason Neck State Park

(Mason Neck, VA): A nature preserve with trails through forests, meadows, and wetlands, as well as access to the Potomac River.

Nearby Cities:

Laurel Hill, VA
Occoquan, VANewington, VA
Woodbridge, VAFort Belvoir, VA
Woodlawn, VAWest Springfield, VA
Potomac Mills, VAHayfield, VA
Springfield, VAMount Vernon, VA
Dale City, VAFranconia, VA
Burke, VARavensworth, VA
North Springfield, VAKings Park, VA
Baltimore, MD
Washington, DCRichmond, VA
Arlington, VANewport News, VA
Alexandria, VAColumbia, MD
Germantown, MDWilmington, DE
Silver Spring, MDCentreville, VA
Frederick, MD