


Hazardous Weather Conditions
Current conditions at
Washington/Dulles International Airport, DC (KIAD)
Lat: 38.93°NLon: 77.45°WElev: 312ft.
Partly Cloudy
74°F
23°C
Humidity | 97% |
Wind Speed | Calm |
Barometer | 30.03 in (1016.6 mb) |
Dewpoint | 73°F (23°C) |
Visibility | 10.00 mi |
Last update | 14 Jul 5:52 am EDT |
Extended Forecast for
3 Miles SSW Herndon VA
Flood Watch July 14, 02:00pm until July 15, 12:00am
Today
High: 90 °F
Slight Chance
T-storms then
T-storms
LikelyTonight
Low: 72 °F
T-storms then
Chance
ShowersTuesday
High: 88 °F
Chance
Showers then
Showers
LikelyTuesday Night
Low: 73 °F
Showers
Likely then
Slight Chance
ShowersWednesday
High: 90 °F
Chance
Showers then
T-stormsWednesday Night
Low: 74 °F
T-storms then
Chance
ShowersThursday
High: 94 °F
Mostly Sunny
then Chance
T-stormsThursday Night
Low: 75 °F
Chance
T-storms then
Partly CloudyFriday
High: 94 °F
Mostly Sunny
then Chance
T-storms
Detailed Forecast
Today
Showers and thunderstorms likely, mainly after 3pm. Partly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 2am, then a chance of showers. Low around 72. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 90. South wind 3 to 7 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 74. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 94. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles SSW Herndon VA
38.93°N 77.42°W (Elev. 308 ft)
38.93°N 77.42°W (Elev. 308 ft)
5:55 am EDT Jul 14, 2025
6am EDT Jul 14, 2025-6pm EDT Jul 20, 2025