Climatological Report (Daily)
Issued by NWS Tiyan, Guam

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267
CDGM40 PGUM 181836
CLIGUM


CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN, GUAM
426 AM CHST TUE DEC 19 2017


...................................

...THE GUAM INTERNATIONAL AIRPORT GU CLIMATE SUMMARY FOR DECEMBER 18 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         89   1224 PM  90    2014  86      3       87
  MINIMUM         80   1148 PM  71    1985  77      3       75
  AVERAGE         85                        81      4       81

PRECIPITATION (IN)
  YESTERDAY        0.12          1.27 1962   0.18  -0.06     0.24
  MONTH TO DATE    3.23                      3.72  -0.49     6.47
  SINCE DEC 1      3.23                      3.72  -0.49     6.47
  SINCE JAN 1     95.91                     95.38   0.53    91.73

SNOWFALL (IN)
  YESTERDAY        0.0
  MONTH TO DATE    0.0
  SINCE DEC 1      0.0
  SINCE JUL 1      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       20                        16      4       16
  MONTH TO DATE  331                       296     35      323
  SINCE DEC 1    331                       296     35      323
  SINCE JAN 1   6342                      5797    545     6531
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  14   RESULTANT WIND DIRECTION   E (70)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NE (50)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     E (80)
  AVERAGE WIND SPEED    14.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    94           300 PM
 LOWEST     59          1200 PM
 AVERAGE    77

..........................................................


THE GUAM INTERNATIONAL AIRPORT GU CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   86        90      1988
 MINIMUM TEMPERATURE (F)   77        71      1963


SUNRISE AND SUNSET
DECEMBER 19 2017......SUNRISE   638 AM CHST  SUNSET   558 PM CHST
DECEMBER 20 2017......SUNRISE   638 AM CHST  SUNSET   558 PM CHST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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