Forecast for station KIAD, forecast created on 150539Z, covering the period from 02/15 06:00Z to 02/16 12:00Z... Forecast calls for wind from heading 330° at 4 knots. Visibility unlimited. Broken clouds at 9000 feet... From 02/15 14:00Z expect wind from heading 320° at 12 knots gusting to 18 knots. Visibility unlimited. Broken clouds at 20000 feet... From 02/15 23:00Z expect wind from heading 330° at 6 knots. Visibility unlimited. Scattered clouds at 20000 feet... From 02/16 04:00Z expect wind from heading 20° at 3 knots. Visibility unlimited. Broken clouds at 10000 feet... From 02/16 09:00Z expect variable winds at 3 knots. Visibility unlimited. Overcast clouds at 5000 feet...