


Hazardous Weather Conditions
Current conditions at
Washington/Dulles International Airport, DC (KIAD)
Lat: 38.93°NLon: 77.45°WElev: 312ft.
Mostly Cloudy
85°F
29°C
Humidity | 75% |
Wind Speed | SE 7 mph |
Barometer | 29.94 in (1013.5 mb) |
Dewpoint | 76°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 95°F (35°C) |
Last update | 16 Jul 5:52 pm EDT |
Extended Forecast for
Vienna VA
Flood Watch July 16, 06:45pm until July 17, 12:00am
Heat Advisory July 17, 11:00am until July 17, 08:00pm
NOW until 12:00am Thu
Flood Watch
Tonight
Low: 75 °F
Chance
T-storms then
Mostly CloudyThursday
High: 95 °F
Sunny then
Chance
T-stormsThursday Night
Low: 76 °F
Partly Cloudy
Friday
High: 89 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 72 °F
Chance
T-storms then
Slight Chance
ShowersSaturday
High: 87 °F
Slight Chance
Showers then
Showers
LikelySaturday Night
Low: 73 °F
Showers
Likely then
Chance
T-stormsSunday
High: 89 °F
Partly Sunny
then Showers
Likely
Detailed Forecast
Tonight
A chance of showers and thunderstorms before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 75. South wind around 8 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 95. Heat index values as high as 105. West wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 76. Southwest wind around 7 mph becoming northwest after midnight.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Northwest wind around 7 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 30%.
Saturday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Monday
A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Vienna VA
38.89°N 77.25°W (Elev. 348 ft)
38.89°N 77.25°W (Elev. 348 ft)
5:33 pm EDT Jul 16, 2025
6pm EDT Jul 16, 2025-6pm EDT Jul 23, 2025