An Active Weather Wednesday

Strong to severe thunderstorms are possible on Wednesday in parts of the Ohio Valley, Upper Mississippi Valley and south-central Plains. These storms may produce heavy rain and flooding in the Ohio Valley. Meanwhile, a strong cold front will sweep through the Northwest U.S. with rain, mountain snow and high winds. Finally, heat and record high temperatures are likely across the Southern U.S. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

67°F

19°C

Humidity 42%
Wind Speed N 7 mph
Barometer 29.97 in (1014.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 17 May 11:52 pm EDT
Extended Forecast for

Herndon VA

  • Overnight

    Overnight: Mostly clear, with a low around 50. North wind around 8 mph.

    Mostly Clear

    Low: 50 °F

  • Wednesday

    Wednesday: Sunny, with a high near 75. North wind around 5 mph becoming calm  in the morning.

    Sunny

    High: 75 °F

  • Wednesday
    Night

    Wednesday Night: Showers likely, with thunderstorms also possible after 2am.  Mostly cloudy, with a low around 59. Southeast wind around 7 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    Low: 59 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms before 2pm.  Partly sunny, with a high near 85. West wind 6 to 10 mph.  Chance of precipitation is 30%.

    Chance
    Showers

    High: 85 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 61. Light northwest wind.

    Mostly Clear

    Low: 61 °F

  • Friday

    Friday: Sunny, with a high near 91.

    Sunny

    High: 91 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 70.

    Mostly Clear

    Low: 70 °F

  • Saturday

    Saturday: Sunny, with a high near 94.

    Sunny

    High: 94 °F

  • Saturday
    Night

    Saturday Night: A chance of showers before 2am.  Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Chance
    Showers

    Low: 71 °F

Detailed Forecast

Overnight
Mostly clear, with a low around 50. North wind around 8 mph.
Wednesday
Sunny, with a high near 75. North wind around 5 mph becoming calm in the morning.
Wednesday Night
Showers likely, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 59. Southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 2pm. Partly sunny, with a high near 85. West wind 6 to 10 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 61. Light northwest wind.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 94.
Saturday Night
A chance of showers before 2am. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Sunday
Showers and possibly a thunderstorm, mainly after 2pm. High near 86. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
A chance of showers. Mostly sunny, with a high near 72. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 ft)
10:32 pm EDT May 17, 2022
12am EDT May 18, 2022-6pm EDT May 23, 2022
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database