Aviation Digital Data Service (ADDS)

Output produced by METARs form (0229 UTC 21 November 2017)
found at http://www.aviationweather.gov/adds/metars/
 
METAR text: KNHK 210152Z 20006KT 10SM FEW250 07/M02 A3021 RMK AO2 SLP229 T00671017
Conditions at: KNHK (PATUXENT RIVER , MD, US) observed 0152 UTC 21 November 2017
Temperature: 6.7°C (44°F)
Dewpoint: -1.7°C (29°F) [RH = 55%]
Pressure (altimeter): 30.21 inches Hg (1023.1 mb)
[Sea-level pressure: 1022.9 mb]
Winds: from the SSW (200 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: at least 12,000 feet AGL
Clouds: few clouds at 25000 feet AGL
Weather: no significant weather observed at this time