Thunderstorms And Heavy Rain Is Expected Through The Plains; Poor Air Quality Persists Out West into Upper Midwest; Major Hurricane Lane Moves Into The Central Pacific

Thunderstorms with heavy to excessive rain is expected across much of the Plains, as a weather system moves into the region. Meanwhile, smoke from numerous ongoing wildfires in western North America are requiring air quality alerts throughout the West into the Upper Midwest. Finally, Major Hurricane Lane continues to track almost due west, transitioning from the Eastern to Central Pacific Ocean. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

71°F

22°C

Humidity 87%
Wind Speed N 8 mph
Barometer 29.88 in (1011.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 3:52 am EDT
Extended Forecast for

Herndon VA

  • Today

    Today: Isolated showers between noon and 3pm, then scattered showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 81. North wind around 7 mph.  Chance of precipitation is 30%.

    Mostly Cloudy
    then
    Scattered
    Showers

    High: 81 °F

  • Tonight

    Tonight: Isolated showers before 2am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 67. Northeast wind 5 to 7 mph.  Chance of precipitation is 20%.

    Isolated
    Showers and
    Patchy Fog

    Low: 67 °F

  • Monday

    Monday: Isolated showers after 2pm.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 81. Northeast wind around 6 mph.  Chance of precipitation is 20%.

    Patchy Fog
    then Isolated
    Showers

    High: 81 °F

  • Monday
    Night

    Monday Night: Isolated showers before 8pm, then isolated showers after 2am.  Mostly cloudy, with a low around 68. Southeast wind 5 to 7 mph.  Chance of precipitation is 20%.

    Mostly Cloudy
    then Isolated
    Showers

    Low: 68 °F

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after noon.  Mostly cloudy, with a high near 83. South wind 5 to 9 mph.  Chance of precipitation is 60%.

    Chance
    Showers then
    T-storms
    Likely

    High: 83 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers.  Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Showers
    Likely

    Low: 71 °F

  • Wednesday

    Wednesday: A chance of showers.  Mostly sunny, with a high near 84. Chance of precipitation is 30%.

    Chance
    Showers

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Partly Cloudy

    Low: 63 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    Mostly Sunny

    High: 79 °F

Detailed Forecast

Today
Isolated showers between noon and 3pm, then scattered showers and thunderstorms after 3pm. Mostly cloudy, with a high near 81. North wind around 7 mph. Chance of precipitation is 30%.
Tonight
Isolated showers before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 67. Northeast wind 5 to 7 mph. Chance of precipitation is 20%.
Monday
Isolated showers after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 81. Northeast wind around 6 mph. Chance of precipitation is 20%.
Monday Night
Isolated showers before 8pm, then isolated showers after 2am. Mostly cloudy, with a low around 68. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Tuesday
Showers and thunderstorms likely, mainly after noon. Mostly cloudy, with a high near 83. South wind 5 to 9 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 ft)
1:56 am EDT Aug 19, 2018
4am EDT Aug 19, 2018-6pm EDT Aug 25, 2018
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database