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

Hurricane Isaias to Approach the Northern Gulf Coast on Friday

Isaias is expected to approach the northern Gulf Coast as a strong hurricane on Friday, bringing life-threatening storm surge, damaging winds, heavy rain, and severe thunderstorms across the region and Southeast into the weekend, with risks of flooding and tornadoes. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

73°F

23°C

Humidity 44%
Wind Speed W 12 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 8 Oct 10:52 am EDT
Extended Forecast for

Herndon VA

  • Today

    Today: Sunny, with a high near 76. Northwest wind around 11 mph, with gusts as high as 22 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. Northwest wind around 6 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. Calm wind.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 71. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 8am. High near 67. Chance of precipitation is 90%.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Columbus Day

    Columbus Day: A chance of showers before 8am. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 76. Northwest wind around 11 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 50. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 73. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 52. Calm wind.
Saturday
Partly sunny, with a high near 71. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Sunday
Showers, mainly after 8am. High near 67. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 61. Chance of precipitation is 80%.
Columbus Day
A chance of showers before 8am. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Herndon VA
 38.99°N 77.38°W (Elev. 318 ft)
Last Update:
10:52 am EDT Oct 8, 2026
Forecast Valid:
11am EDT Oct 8, 2026-6pm EDT Oct 14, 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