Climatological Report (Daily)
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CDUS46 KMTR 210045
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
445 PM PST SAT DEC 20 2014


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 2014...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1927 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         62    359 PM  69    1999  56      6       60
                                      1887
  MINIMUM         56    743 AM  31    1965  44     12       40
  AVERAGE         59                        50      9       50

PRECIPITATION (IN)
  TODAY            0.02          0.91 1970   0.15  -0.13     0.00
  MONTH TO DATE   10.60                      2.44   8.16     0.35
  SINCE JUL 1     13.32                      5.98   7.34     1.49
  SINCE JAN 1     20.63                     19.06   1.57     3.38

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

DEGREE DAYS
 HEATING
  TODAY            6                        15     -9       15
  MONTH TO DATE  122                       280   -158      328
  SINCE DEC 1    122                       280   -158      328
  SINCE JUL 1    310                       844   -534      829

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    497                       164    333      164
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  NE (60)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED     9   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     1.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     84           300 PM
 AVERAGE    92

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        68      1999
 MINIMUM TEMPERATURE (F)   44        28      1990


SUNRISE AND SUNSET
DECEMBER 20 2014......SUNRISE   720 AM PST   SUNSET   454 PM PST
DECEMBER 21 2014......SUNRISE   721 AM PST   SUNSET   455 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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