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

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Fair with Haze

88°F

31°C

Humidity 52%
Wind Speed W 10 mph
Barometer 29.96 in (1014.7 mb)
Dewpoint 68°F (20°C)
Visibility 4.00 mi
Heat Index92°F (33°C)
Last update 13 Aug 11:56 am EDT
Extended Forecast for

Loch Lomond VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 90. Northwest wind around 7 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 85. Calm wind. Chance of precipitation is 30%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 87. Northeast wind 3 to 5 mph.

    High: 87 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 91. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 40%.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 90. Northwest wind around 7 mph.
Tonight
Mostly cloudy, with a low around 70. Light and variable wind.
Friday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 85. Calm wind. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 40%.
Saturday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 87. Northeast wind 3 to 5 mph.
Saturday Night
A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
A slight chance of showers. Sunny, with a high near 90. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Loch Lomond VA
 38.78°N 77.47°W (Elev. 210 ft)
Last Update:
10:53 am EDT Aug 13, 2026
Forecast Valid:
12pm EDT Aug 13, 2026-6pm EDT Aug 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation