Widespread Summer Heat; Enhanced Severe Weather

A large ridge of high pressure continues to deliver summer heat w/ humidity in several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, south-central Plains, Mid to Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, an enhanced risk of organized severe thunderstorms is possible from Iowa to Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

32°C

90°F

Humidity 54%
Wind Speed E 7 km/h
Barometer 1017.5 mb (30.06 in)
Dewpoint 22°C (71°F)
Visibility 16 km
Heat Index36°C (96°F)
Last update 20 Aug 1:52 pm EDT
Extended Forecast for

3 Miles W Fairfax VA

  • This
    Afternoon

    This Afternoon: Scattered showers and thunderstorms, mainly after 3pm. Some of the storms could produce gusty winds.  Mostly cloudy, with a high near 34. South wind 8 to 10 km/h.  Chance of precipitation is 50%.

    Scattered
    T-storms

    High: 34 °C

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 9pm. Some of the storms could produce gusty winds.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 22. East wind 5 to 8 km/h becoming south after midnight.  Chance of precipitation is 50%.

    Scattered
    T-storms then
    Isolated
    T-storms and
    Patchy Fog

    Low: 22 °C

  • Wednesday

    Wednesday: Scattered showers and thunderstorms, mainly after 2pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 32. South wind 11 to 16 km/h.  Chance of precipitation is 40%.

    Scattered
    T-storms and
    Patchy Fog

    High: 32 °C

  • Wednesday
    Night

    Wednesday Night: Scattered showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 23. West wind 8 to 11 km/h.  Chance of precipitation is 30%.

    Scattered
    T-storms

    Low: 23 °C

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 2pm.  Partly sunny, with a high near 33. West wind 5 to 10 km/h.  Chance of precipitation is 50%.

    Slight Chance
    T-storms then
    Chance
    T-storms

    High: 33 °C

  • Thursday
    Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 19. Chance of precipitation is 50%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 19 °C

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 8am.  Partly sunny, with a high near 27. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 27 °C

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 17. Chance of precipitation is 40%.

    Chance
    T-storms

    Low: 17 °C

  • Saturday

    Saturday: Mostly sunny, with a high near 27.

    Mostly Sunny

    High: 27 °C

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, mainly after 3pm. Some of the storms could produce gusty winds. Mostly cloudy, with a high near 34. South wind 8 to 10 km/h. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms, mainly before 9pm. Some of the storms could produce gusty winds. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 22. East wind 5 to 8 km/h becoming south after midnight. Chance of precipitation is 50%.
Wednesday
Scattered showers and thunderstorms, mainly after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 32. South wind 11 to 16 km/h. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 23. West wind 8 to 11 km/h. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 33. West wind 5 to 10 km/h. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 27. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
Mostly clear, with a low around 17.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 27.
Click Map For Forecast
Point Forecast:
3 Miles W Fairfax VA
 38.85°N 77.35°W (Elev. 122 m)
1:31 pm EDT Aug 20, 2019
2pm EDT Aug 20, 2019-6pm EDT Aug 26, 2019
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database