Aviation Digital Data Service (ADDS)

Output produced by METARs form (2036 UTC 16 December 2017)
found at http://www.aviationweather.gov/adds/metars/
 
Forecast for: KSFO (SAN FRANCISCO , CA, US)
Text: KSFO 161734Z 1618/1724 33018G28KT P6SM FEW200 WS020/01040KT
Forecast period: 1800 to 2000 UTC 16 December 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the NNW (330 degrees) at 21 MPH (18 knots; 9.4 m/s)
gusting to 32 MPH (28 knots; 14.6 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: few clouds at 20000 feet AGL
Wind shear: at 2000 feet ( 610 m) AGL, from the N (10 degrees) at 46 MPH (40 knots; 20.8 m/s)
Weather: no significant weather forecast for this period
Text: FM162000 35023G33KT P6SM SKC WS020/01040KT
Forecast period: 2000 UTC 16 December 2017 to 0300 UTC 17 December 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the N (350 degrees) at 26 MPH (23 knots; 12.0 m/s)
gusting to 38 MPH (33 knots; 17.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: clear skies
Wind shear: at 2000 feet ( 610 m) AGL, from the N (10 degrees) at 46 MPH (40 knots; 20.8 m/s)
Weather: no significant weather forecast for this period
Text: FM170300 36020G30KT P6SM SKC WS020/01040KT
Forecast period: 0300 to 0900 UTC 17 December 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the N (360 degrees) at 23 MPH (20 knots; 10.4 m/s)
gusting to 34 MPH (30 knots; 15.6 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: clear skies
Wind shear: at 2000 feet ( 610 m) AGL, from the N (10 degrees) at 46 MPH (40 knots; 20.8 m/s)
Weather: no significant weather forecast for this period
Text: FM170900 01012KT P6SM SKC
Forecast period: 0900 to 1200 UTC 17 December 2017
Forecast type: FROM: standard forecast or significant change
Winds: from the N (10 degrees) at 14 MPH (12 knots; 6.2 m/s)
Visibility: 6 or more miles (10+ km)
Clouds: clear skies
Weather: no significant weather forecast for this period
Text: FM171200 VRB04KT P6SM SKC
Forecast period: 1200 UTC 17 December 2017 to 0000 UTC 18 December 2017
Forecast type: FROM: standard forecast or significant change
Winds: variable direction winds 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