Dulles International Airport (IAD) 15 Day Weather Forecast, Washington United States
Current weather conditions and 15 day weather forecast for Dulles International Airport in Washington, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at IAD
| 13 September 2026 Sun 22.9 ° C ( 73.2°F )  Mist |
Feels Like : 26.7 ° C / 80.1°F Humidity : % 95 Pressure : 1013 mb Wind Speed : 4.7 kmph / 2.9 miles from SSW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Dulles International Airport, Washington, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun | Mist |
21.6 ° C | 31 ° C | 25.5 ° C | % 78 | 9 km/h | 78% |
| 14 September 2026 Mon |  Sunny |
15.5 ° C | 25.2 ° C | 21.3 ° C | % 60 | 21.6 km/h | 7% |
| 15 September 2026 Tue | Sunny |
10.9 ° C | 25.8 ° C | 18.2 ° C | % 54 | 11.2 km/h | 4% |
| 16 September 2026 Wed | Sunny |
14.8 ° C | 27.6 ° C | 20.9 ° C | % 66 | 10.8 km/h | 5% |
| 17 September 2026 Thu | Sunny |
17.1 ° C | 29.3 ° C | 22.6 ° C | % 57 | 13 km/h | 3% |
| 18 September 2026 Fri | Sunny |
18.6 ° C | 31.5 ° C | 23.4 ° C | % 71 | 19.8 km/h | 66% |
| 19 September 2026 Sat |  Light rain shower |
11.2 ° C | 18 ° C | 13.7 ° C | % 97 | 19.8 km/h | 94% |
| 20 September 2026 Sun | Light rain shower |
11.1 ° C | 18.9 ° C | 13.8 ° C | % 79 | 15.1 km/h | 74% |
| 21 September 2026 Mon | Sunny |
9.7 ° C | 22 ° C | 15.6 ° C | % 63 | 18.4 km/h | 4% |
| 22 September 2026 Tue |  Overcast |
11.9 ° C | 19.2 ° C | 15.3 ° C | % 67 | 17.3 km/h | 13% |
| 23 September 2026 Wed | Sunny |
12 ° C | 21.6 ° C | 16.3 ° C | % 69 | 11.5 km/h | 7% |
| 24 September 2026 Thu | Overcast |
11.8 ° C | 23.2 ° C | 16.9 ° C | % 72 | 9 km/h | 10% |
| 25 September 2026 Fri | Overcast |
12.2 ° C | 22.1 ° C | 16.8 ° C | % 59 | 16.6 km/h | 7% |
| 26 September 2026 Sat | Sunny |
13.4 ° C | 32 ° C | 19 ° C | % 52 | 22.3 km/h | 4% |
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