Climatological Report (Daily)
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252
CDUS46 KMTR 160025
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
425 PM PST FRI DEC 15 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 15 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         57    232 PM  71    1980  56      1       61
  MINIMUM         44    449 AM  31    1967  45     -1       51
  AVERAGE         51                        50      1       56

PRECIPITATION (IN)
  TODAY            0.00          1.49 2016   0.13  -0.13     1.49
  MONTH TO DATE    0.03                      1.75  -1.72     3.98
  SINCE OCT 1      3.01                      5.08  -2.07     8.30
  SINCE JAN 1     25.20                     18.37   6.83    20.74

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

DEGREE DAYS
 HEATING
  TODAY           14                        15     -1        9
  MONTH TO DATE  174                       205    -31      171
  SINCE DEC 1    174                       205    -31      171
  SINCE JUL 1    513                       769   -256      585

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    346                       164    182      142
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION   S (180)
  HIGHEST WIND SPEED     6   HIGHEST WIND DIRECTION     N (360)
  HIGHEST GUST SPEED     8   HIGHEST GUST DIRECTION    SE (120)
  AVERAGE WIND SPEED     2.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82           600 AM
 LOWEST     61          1200 PM
 AVERAGE    72

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        70      1998
 MINIMUM TEMPERATURE (F)   44        33      1965


SUNRISE AND SUNSET
DECEMBER 15 2017......SUNRISE   717 AM PST   SUNSET   452 PM PST
DECEMBER 16 2017......SUNRISE   718 AM PST   SUNSET   453 PM PST


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




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