National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

87°F

31°C

Humidity 59%
Wind Speed E 5 mph
Barometer 30.04 in (1016.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 15 Jul 5:52 pm EDT
Extended Forecast for

5 Miles NNW Haymarket VA

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 7pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 73. Light south wind. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 100. South wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Patchy Fog
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 74. Southwest wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 102. West wind around 8 mph. Chance of precipitation is 40%.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Partly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly before 7pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 73. Light south wind. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 100. South wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 74. Southwest wind 6 to 8 mph. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Heat index values as high as 102. West wind around 8 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. West wind around 6 mph. Chance of precipitation is 30%.
Friday
Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Sunday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Haymarket VA
 38.89°N 77.66°W (Elev. 407 ft)
Last Update:
1:31 pm EDT Jul 15, 2025
Forecast Valid:
6pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation