Climatological Report (Daily)
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000
CDCA42 TJSJ 170430
CLIISX


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN, PR
1230 AM AST SUN DEC 17 2017


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

...THE HENRY E. ROHLSEN AP/ST CROIX CLIMATE SUMMARY FOR DECEMBER 16 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1951 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         87   1205 PM  88    1998  85      2       87
  MINIMUM         74    509 AM  67    2012  73      1       74
  AVERAGE         81                        79      2       81

PRECIPITATION (IN)
  YESTERDAY        T             1.05 1980   0.09  -0.09      T
  MONTH TO DATE    3.11                      1.68   1.43     2.52
  SINCE DEC 1      3.11                      1.68   1.43     2.52
  SINCE JAN 1     40.80                     37.38   3.42    33.45

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

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       16                        14      2       16
  MONTH TO DATE  241                       229     12      246
  SINCE DEC 1    241                       229     12      246
  SINCE JAN 1   4486                      5626  -1140     5800
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NE (50)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION    NE (50)
  AVERAGE WIND SPEED    12.4


SKY COVER
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88
 LOWEST     70
 AVERAGE    79

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


THE HENRY E. ROHLSEN AP/ST CROIX CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   85        88      2013
 MINIMUM TEMPERATURE (F)   73        67      1991


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   643 AM AST   SUNSET   548 PM AST
DECEMBER 18 2017......SUNRISE   644 AM AST   SUNSET   548 PM AST


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




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