Aviation Digital Data Service (ADDS)

Output produced by METARs form (1212 UTC 24 March 2017)
found at http://www.aviationweather.gov/adds/metars/
 
METAR text: KNHK 241152Z 20008KT 10SM BKN280 03/M02 A3050 RMK AO2 SLP327 T00281017 10028 20022 56004 VISNO RY24 $
Conditions at: KNHK (PATUXENT RIVER , MD, US) observed 1152 UTC 24 March 2017
Temperature: 2.8°C (37°F)
Dewpoint: -1.7°C (29°F) [RH = 72%]
Pressure (altimeter): 30.50 inches Hg (1032.9 mb)
[Sea-level pressure: 1032.7 mb]
Winds: from the SSW (200 degrees) at 9 MPH (8 knots; 4.2 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: 28000 feet AGL
Clouds: broken clouds at 28000 feet AGL
Weather:
SOME DATA ABOVE MAY BE INACCURATE!!!
"$" is an indication the sensor requires maintenance