National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Thunderstorm Light Rain in Vicinity

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.82 in (1010.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 27 Jul 1:55 am EDT
Extended Forecast for

Franconia VA

  • Overnight

    Overnight: Mostly clear, with a low around 67. Light south wind.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, mainly between 9pm and 10pm. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 83. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers
    Likely then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. West wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 67. Light south wind.
Monday
A chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
A slight chance of showers and thunderstorms, mainly between 9pm and 10pm. Partly cloudy, with a low around 69. Light south wind. Chance of precipitation is 20%.
Tuesday
Showers and possibly a thunderstorm. High near 83. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. West wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 69.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Franconia VA
 38.77°N 77.16°W (Elev. 197 ft)
Last Update:
10:53 pm EDT Jul 26, 2026
Forecast Valid:
2am EDT Jul 27, 2026-6pm EDT Aug 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation