Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

78°F

26°C

Humidity 69%
Wind Speed SE 6 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Aug 10:52 pm EDT
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Partly cloudy, with a low around 72. South wind around 6 mph.

    Partly Cloudy

    Low: 72 °F

  • Monday

    Monday: Isolated showers and thunderstorms after 3pm.  Mostly sunny, with a high near 95. Heat index values as high as 101. Southwest wind 3 to 6 mph.  Chance of precipitation is 20%.

    Mostly Sunny
    then Isolated
    T-storms

    High: 95 °F

  • Monday
    Night

    Monday Night: Isolated showers and thunderstorms before 9pm.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 75. Southwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Patchy Fog

    Low: 75 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 94. Heat index values as high as 101. Calm wind becoming south around 6 mph in the afternoon.  Chance of precipitation is 40%.

    Patchy Fog
    then Chance
    T-storms

    High: 94 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 40%.

    Chance
    T-storms then
    Chance
    Showers

    Low: 73 °F

  • Wednesday

    Wednesday: A chance of showers and thunderstorms.  Partly sunny, with a high near 93. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 93 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers.  Partly cloudy, with a low around 74. Chance of precipitation is 40%.

    Chance
    Showers

    Low: 74 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms.  Partly sunny, with a high near 90. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 90 °F

  • Thursday
    Night

    Thursday Night: A chance of showers.  Mostly cloudy, with a low around 67. Chance of precipitation is 40%.

    Chance
    Showers

    Low: 67 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 72. South wind around 6 mph.
Monday
Isolated showers and thunderstorms after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 101. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Monday Night
Isolated showers and thunderstorms before 9pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 75. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 94. Heat index values as high as 101. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 93. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 87.
Click Map For Forecast
Point Forecast:
Fairfax VA
 38.85°N 77.29°W (Elev. 400 ft)
10:31 pm EDT Aug 18, 2019
11pm EDT Aug 18, 2019-6pm EDT Aug 25, 2019
 
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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