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Storm system to bring heavy rainfall and the potential for flash flooding over the southern Mid Atlantic and Southeast U.S.

A slow moving low pressure system will bring the threat for heavy rainfall, flash flooding, and a few strong to severe thunderstorms into Tuesday. The main threat areas include the southern Mid Atlantic and Southeast U.S. Excessive runoff may lead to flooding of low lying areas, rivers, and streams. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

52°F

11°C

Humidity 83%
Wind Speed NE 9 mph
Barometer 30.08 in (1018.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 24 Apr 7:52 am EDT
Extended Forecast for

Herndon VA

  • Today

    Today: Periods of rain, mainly after 2pm.  High near 53. Northeast wind 7 to 13 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Chance Rain
    then Rain

    High: 53 °F

  • Tonight

    Tonight: Periods of rain.  Low around 48. Northeast wind around 11 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 48 °F

  • Tuesday

    Tuesday: Periods of rain.  High near 57. Northeast wind 11 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Rain

    High: 57 °F

  • Tuesday
    Night

    Tuesday Night: Rain likely, mainly before 2am.  Cloudy, with a low around 55. North wind 7 to 10 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Rain Likely

    Low: 55 °F

  • Wednesday

    Wednesday: A chance of rain, mainly before 8am.  Mostly cloudy, with a high near 69. Northwest wind 3 to 6 mph.  Chance of precipitation is 30%.

    Chance Rain

    High: 69 °F

  • Wednesday
    Night

    Wednesday Night: Areas of fog after 2am.  Otherwise, partly cloudy, with a low around 57.

    Partly Cloudy
    then Areas
    Fog

    Low: 57 °F

  • Thursday

    Thursday: Areas of fog before 8am.  Otherwise, mostly sunny, with a high near 84.

    Areas Fog
    then Mostly
    Sunny

    High: 84 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 64.

    Partly Cloudy

    Low: 64 °F

  • Friday

    Friday: Partly sunny, with a high near 85.

    Partly Sunny

    High: 85 °F

Detailed Forecast

Today
Periods of rain, mainly after 2pm. High near 53. Northeast wind 7 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Periods of rain. Low around 48. Northeast wind around 11 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Periods of rain. High near 57. Northeast wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain likely, mainly before 2am. Cloudy, with a low around 55. North wind 7 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain, mainly before 8am. Mostly cloudy, with a high near 69. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday Night
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 57.
Thursday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 85.
Friday Night
Mostly cloudy, with a low around 64.
Saturday
Partly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 ft)
7:27 am EDT Apr 24, 2017
8am EDT Apr 24, 2017-6pm EDT Apr 30, 2017
 
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