Aviation Digital Data Service (ADDS)

Output produced by METARs form (0601 UTC 21 January 2019)
found at http://www.aviationweather.gov/metar/data/
 
Forecast for: KIAD (WASH DC/DULLES , VA, US)
Text: KIAD 210540Z 2106/2212 31020G29KT P6SM FEW050
Forecast period: 0600 to 1300 UTC 21 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (310 degrees) at 23 MPH (20 knots; 10.3 m/s)
gusting to 33 MPH (29 knots; 14.9 m/s)
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 5000 feet AGL
Weather: no significant weather forecast for this period
Text: FM211300 31024G35KT P6SM SKC
Forecast period: 1300 to 2200 UTC 21 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (310 degrees) at 28 MPH (24 knots; 12.3 m/s)
gusting to 40 MPH (35 knots; 18.0 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM212200 31014G22KT P6SM SKC
Forecast period: 2200 UTC 21 January 2019 to 0100 UTC 22 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (310 degrees) at 16 MPH (14 knots; 7.2 m/s)
gusting to 25 MPH (22 knots; 11.3 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM220100 31010KT P6SM SKC
Forecast period: 0100 to 0600 UTC 22 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (310 degrees) at 12 MPH (10 knots; 5.1 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM220600 32006KT P6SM SKC
Forecast period: 0600 to 1200 UTC 22 January 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the NW (320 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period