Aviation Digital Data Service (ADDS)

Output produced by METARs form (1021 UTC 20 September 2019)
found at http://aviationweather.gov/metar/data/
 
METAR text: KIAD 200952Z 00000KT 10SM SCT250 10/07 A3029 RMK AO2 SLP257 T01000072
Conditions at: KIAD (WASH DC/DULLES , VA, US) observed 0952 UTC 20 September 2019
Temperature: 10.0°C (50°F)
Dewpoint: 7.2°C (45°F) [RH = 83%]
Pressure (altimeter): 30.29 inches Hg (1025.8 mb)
[Sea-level pressure: 1025.7 mb]
Winds: calm
Visibility: 10 or more miles (16+ km)
Ceiling: at least 12,000 feet AGL
Clouds: scattered clouds at 25000 feet AGL
Weather: no significant weather observed at this time

Forecast for: KIAD (WASH DC/DULLES , VA, US)
Text: KIAD 200840Z 2009/2112 00000KT P6SM FEW250
Forecast period: 0900 to 1300 UTC 20 September 2019
Forecast type: FROM: standard forecast or significant change
Winds: calm
Visibility: 6 or more miles 10+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 25000 feet AGL
Weather: no significant weather forecast for this period
Text: FM201300 22004KT P6SM SKC
Forecast period: 1300 UTC 20 September 2019 to 0000 UTC 21 September 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the SW (220 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM210000 18004KT P6SM SKC
Forecast period: 0000 to 0800 UTC 21 September 2019
Forecast type: FROM: standard forecast or significant change
Winds: from the S (180 degrees) at 5 MPH (4 knots; 2.1 m/s)
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM210800 00000KT P6SM SKC
Forecast period: 0800 to 1200 UTC 21 September 2019
Forecast type: FROM: standard forecast or significant change
Winds: calm
Visibility: 6 or more miles 10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period