Flash Flood Watches in Southeast and Tennessee Valley; Critical Fire Weather in California; Severe Weather in Upper Midwest

Flash flood watches are in effect today in parts of the Southeast and Tennessee Valley from organized areas of heavy to excessive rainfall. Meanwhile, critical fire weather conditions are likely across northern California with offshore winds and dry conditions. Finally, a strong cold front will produce severe thunderstorms across the Upper to Mid Mississippi Valley. 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 50%
Wind Speed E 5 mph
Barometer 30.27 in (1024.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Sep 2:52 pm EDT
Extended Forecast for

Chantilly VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. East wind 3 to 7 mph.

    Mostly Cloudy

    Low: 62 °F

  • Tuesday

    Tuesday: A slight chance of showers.  Mostly cloudy, with a high near 79. Light east wind becoming southeast 5 to 9 mph in the morning.  Chance of precipitation is 20%.

    Slight Chance
    Showers

    High: 79 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers, mainly after 2am.  Mostly cloudy, with a low around 67. Southeast wind around 8 mph.  Chance of precipitation is 40%.

    Chance
    Showers

    Low: 67 °F

  • Wednesday

    Wednesday: Showers likely, mainly after 8am.  Mostly cloudy, with a high near 80. South wind 8 to 13 mph.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Showers
    Likely

    High: 80 °F

  • Wednesday
    Night

    Wednesday Night: Showers, with thunderstorms also possible after 2am.  Low around 62. South wind around 10 mph becoming west after midnight.  Chance of precipitation is 80%.

    Showers

    Low: 62 °F

  • Thursday

    Thursday: Showers and possibly a thunderstorm.  High near 74. Chance of precipitation is 80%.

    Showers

    High: 74 °F

  • Thursday
    Night

    Thursday Night: Showers likely, mainly before 8pm.  Partly cloudy, with a low around 56. Chance of precipitation is 60%.

    Showers
    Likely then
    Chance
    Showers

    Low: 56 °F

  • Friday

    Friday: Sunny, with a high near 73.

    Sunny

    High: 73 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 53.

    Mostly Clear

    Low: 53 °F

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. East wind 3 to 7 mph.
Tuesday
A slight chance of showers. Mostly cloudy, with a high near 79. Light east wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 67. Southeast wind around 8 mph. Chance of precipitation is 40%.
Wednesday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 80. South wind 8 to 13 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers, with thunderstorms also possible after 2am. Low around 62. South wind around 10 mph becoming west after midnight. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.
Thursday Night
Showers likely, mainly before 8pm. Partly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 75.
Click Map For Forecast
Point Forecast:
Chantilly VA
 38.88°N 77.43°W (Elev. 299 ft)
1:31 pm EDT Sep 20, 2021
3pm EDT Sep 20, 2021-6pm EDT Sep 27, 2021
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database