Climatological Report (Daily)
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CDUS46 KMTR 200845
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1245 AM PST SAT DEC 20 2014


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 2014...

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)
 YESTERDAY
  MAXIMUM         59    238 PM  68    1999  56      3       59
  MINIMUM         55    610 AM  32    1965  44     11       47
  AVERAGE         57                        50      7       53

PRECIPITATION (IN)
  YESTERDAY        0.38          1.81 1952   0.14   0.24     0.00
  MONTH TO DATE   10.58                      2.29   8.29     0.35
  SINCE JUL 1     13.30                      5.83   7.47     1.49
  SINCE JAN 1     20.61                     18.91   1.70     3.38

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

DEGREE DAYS
 HEATING
  YESTERDAY        8                        15     -7       12
  MONTH TO DATE  116                       265   -149      313
  SINCE DEC 1    116                       265   -149      313
  SINCE JUL 1    304                       829   -525      814

 COOLING
  YESTERDAY        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   5   RESULTANT WIND DIRECTION  SE (130)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SE (130)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SE (150)
  AVERAGE WIND SPEED     5.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           300 PM
 LOWEST     80          1200 AM
 AVERAGE    90

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        69      1999
                                             1887
 MINIMUM TEMPERATURE (F)   44        31      1965


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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