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Current warnings over Dumbarton, 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 Dumbarton, 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 Dumbarton, 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 Henrico 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 Dumbarton, 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 Dumbarton, 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 Dumbarton, 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 Dumbarton, 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 Dumbarton, 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 Henrico 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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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)
Sure, here is a climate summary for Dumbarton, VA:

Climate Summary for Dumbarton, VA

Location

Dumbarton is located in Fairfax County, Virginia, in the eastern United States. It is a suburban community located approximately 10 miles southwest of Washington, D.C.

Köppen Climate Classification

Dumbarton has a humid subtropical climate (Cfa) according to the Köppen climate classification system. This climate is characterized by hot, humid summers and mild to cool winters.

Temperature

    •   Average annual temperature: 56.6°F (13.7°C)
    •   Average summer temperature (June-August): 77.9°F (25.5°C)
    •   Average winter temperature (December-February): 35.9°F (2.2°C)
    •   Record high temperature: 106°F (41°C)
    •   Record low temperature: -15°F (-26°C)

Precipitation

    •   Average annual precipitation: 41.9 inches (1064 mm)
    •   Average number of rainy days per year: 117
    •   Average snowfall per year: 18.4 inches (47 cm)

Humidity

    •   Average annual relative humidity: 67%
    •   Average summer relative humidity: 70%
    •   Average winter relative humidity: 62%

Wind

    •   Average annual wind speed: 9.0 mph (14.5 km/h)
    •   Prevailing wind direction: West-southwest

Climate Summary

Dumbarton, VA has a humid subtropical climate with hot, humid summers and mild to cool winters. The average annual temperature is 56.6°F (13.7°C), and the average annual precipitation is 41.9 inches (1064 mm). The climate is generally favorable for outdoor activities year-round, although the summer months can be hot and humid.

Additional Information

    •   Dumbarton is located in USDA Hardiness Zone 7a.
    •   The average growing season in Dumbarton is 200 days.
    •   The area is prone to occasional severe weather events, such as thunderstorms, hail, and tornadoes.

I hope this climate summary is helpful. Please let me know if you have any other questions.

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

    •   Dumbarton is home to the Mason Neck State Park, a 1,800-acre natural area with diverse ecosystems, including forests, wetlands, and tidal marshes.

    •   The park is a haven for wildlife, including bald eagles, osprey, and deer.

Science

    •   Dumbarton is the site of the George Mason University's Center for Applied Proteomics and Molecular Medicine, a leading research center in proteomics and molecular medicine.

    •   The university also has a strong astrophysics program and operates the George Mason University Observatory.

Personalities

    •   George Mason IV, a Founding Father and author of the Virginia Declaration of Rights, lived at Gunston Hall, a historic plantation in Dumbarton.

    •   John Marshall, the fourth Chief Justice of the United States, also lived in Dumbarton at Oak Hill.

    •   The town was named after Dumbarton Castle in Scotland, the birthplace of George Mason IV's grandfather.

Tourist Attractions
1. Meadowlark Botanical Gardens

2. Sully Historic Site

3. Frying Pan Farm Park

Nearby Cities:

Lakeside, VA
Laurel, VARichmond, VA
Tuckahoe, VAGlen Allen, VA
East Highland Park, VABon Air, VA
Mechanicsville, VAShort Pump, VA
Highland Springs, VAMeadowbrook, VA
Sandston, VAAshland, VA
Fort Lee, VABellwood, VA
Brandermill, VAChester, VA
Washington, DC
Virginia Beach, VANorfolk, VA
Chesapeake, VAArlington, VA
Newport News, VAAlexandria, VA
East Hampton, VAHampton, VA
Columbia, MDPortsmouth Heights, VA
Portsmouth, VA