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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

73°F

23°C

Humidity 96%
Wind Speed S 5 mph
Barometer 30.08 in (1018.2 mb)
Dewpoint 72°F (22°C)
Visibility 7.00 mi
Last update 18 Sep 3:52 am EDT
Extended Forecast for

2 Miles SSE Ashburn VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 70. Light northwest wind.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind around 8 mph.

    High: 84 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60. North wind around 6 mph.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78. North wind around 6 mph becoming east in the afternoon.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66. Southeast wind around 7 mph.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 70. Light northwest wind.
Friday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind around 8 mph.
Friday Night
Mostly cloudy, with a low around 60. North wind around 6 mph.
Saturday
Partly sunny, with a high near 78. North wind around 6 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 66. Southeast wind around 7 mph.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Monday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Ashburn VA
 39.02°N 77.46°W (Elev. 249 ft)
Last Update:
2:22 am EDT Sep 18, 2026
Forecast Valid:
3am EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
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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