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.

Fair

44°F

7°C

Humidity 96%
Wind Speed Calm
Barometer 30.43 in (1030.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 25 Oct 11:52 pm EDT
Extended Forecast for

Chantilly VA

Frost Advisory October 26, 01:00am until October 26, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Patchy fog after 5am. Areas of frost after 4am. Otherwise, clear, with a low around 37. Calm wind.

    Low: 37 °F

    Areas Frost
    and Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Areas of frost before 9am. Otherwise, sunny, with a high near 69. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 69 °F

    Areas Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 47. Calm wind becoming northwest around 5 mph.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. North wind around 6 mph.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. Light east wind.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Areas of frost after 4am. Otherwise, clear, with a low around 37. Calm wind.
Monday
Patchy fog before 9am. Areas of frost before 9am. Otherwise, sunny, with a high near 69. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 47. Calm wind becoming northwest around 5 mph.
Tuesday
Sunny, with a high near 69. North wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 47. Light east wind.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 52.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chantilly VA
 38.88°N 77.4°W (Elev. 358 ft)
Last Update:
10:53 pm EDT Oct 25, 2026
Forecast Valid:
12am EDT Oct 26, 2026-6pm EST Nov 1, 2026
 
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