Metar trends

METAR/TAF(Classic format)(METAR/TAF Trend/History displayed directly below)
(enter CONUS apts starting with a K(eg. KMCC), enter Alaska/Hawaii apts starting with a P(eg. PANC))

Get Apt METAR code for recent obs

Get Apt METAR code for recent obs + Direct NWS Link (if METAR history doesn't display (which is often)

FAA Surface Weather Observation Stations ASOS/AWOS Readings with Map

NOAA ASOS Recent Observation History (click to select airport code)

CLM METAR history (last 5 updates)

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ADDS - METARS form results

Aviation Digital Data Service (ADDS)

Output produced by METARs form (0059 UTC 31 May 2020)
found at
KCLM 310053Z AUTO 29013KT 5SM -RA BR OVC090 11/09 A2986 RMK AO2 SLP113 P0006 T01060094
KCLM 302353Z AUTO 27013G20KT 10SM -RA OVC095 11/09 A2984 RMK AO2 RAE21B40 SLP104 P0000 60000 T01110089 10139 20111 55002
KCLM 302253Z AUTO 28015G18KT 10SM -RA FEW075 BKN100 OVC110 12/10 A2982 RMK AO2 RAB39 SLP099 P0000 T01170100
KCLM 302153Z AUTO 29013G18KT 10SM OVC095 12/09 A2984 RMK AO2 RAB09E48 SLP104 P0000 T01170094
KCLM 302053Z AUTO 35003KT 10SM OVC100 13/10 A2984 RMK AO2 SLP106 T01330100 55004
KCLM 301953Z AUTO 28006KT 10SM BKN090 BKN120 13/09 A2983 RMK AO2 SLP103 T01280094
KCLM 301900Z AUTO 29007KT 10SM SCT014 BKN085 12/09 A2984 RMK AO2 T01220094
KCLM 302320Z 3100/3124 30012KT P6SM -RA SCT010 BKN050 OVC100 
     FM310300 29014G22KT P6SM -SHRA OVC040 
     FM311000 27016G24KT P6SM VCSH OVC030 
     FM311600 30013KT P6SM OVC035

5 min APT wthr

CWSU Observations

RELOAD current METAR trend

METAR Numeric Codes (usually listed after RMK)

1xxxxx___6-hr maximum temp(2nd digit=0 is positive, 1 is negative)(eg. 10405 = +40.5 degrees Celsius)

2xxxxx___6-hr minimum temp (eg. 21337 = -33.7 degrees Celsius)

4/xxx___Total snow depth in inches (eg. 4/020 = snow depth of 20 inches on ground)

4xxxxxxxx___24-hr maximum/minimum temperatures, 2nd and sixth digits equal 0 for positive and 1 for negative (eg. 401551095 = 24-hr maximum temp of +15.5 degrees Celsius and a 24-hr minimum temp of -9.5 degrees Celsius)

5xxxx___3 hour pressure tendency. The second digit gives the tendency/trend: 0–3 is rising, 4 is steady and 5–8 is falling , the last 3 digits give the pressure change in tenths of a millibar in the last 3 hours. (eg 50009 indicates a rising pressure tendency/trend of 0.9 millibars.)

6xxxx___3 or 6 hour precipitation amount. The last 4 digits are the inches of rain in hundredths. (eg. 60200 = 2 inches of rain)

7xxxx___24-hour precipitation amount. The last 4 digits are the inches of rain in hundredths. (eg. 70500 = 5 inches of rain)

8/xxx___Cloud cover using WMO code. Three digit code follows the /. Lower numbers are for clearer skies, high numbers are for overcast. (I have not seen this in the NorCal airport METARs yet).

98xxx___Duration of sunshine in minutes. The last three digits after 98 are minutes. (eg. 98120 = 120 minutes of sunshine)

931xxx___Snowfall in the last 6-hours. The last three digits display snowfall in inches and tenths. (eg. 931515 = 51.5 inches of snowfall)

933xxx___Liquid water equivalent of the snow (SWE). The last three digits display liquid water equivalent of snow in inches and tenths (eg. 933055 = 5.5 inches of liquid water in snow)

Other METAR codes
SLP155 = current barometric pressure extrapolated to sea level (SLP155 equals 1015.5 hPa)

Pxxxx = liquid-equivalent precipitation accumulated during the last hour to hundredths of inches (P0050 = .5 inch of rain in the past hour)

Txxxxxxxx is the current Temperature and Dew point. The first 4 digits are temperature. The second 4 digits are Dew Point. The first digit of each group is either 0 for above zero Celsius or 1 for below zero Celsius. (eq. T00251015 = Temp +2.5C, Dew Pt -1.5C)













William R Fairchild International (Port Angeles, WA Intl Apt) (KCLM)