Climatological Report (Daily)
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000
CDUS46 KMTR 140827
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1227 AM PST THU DEC 14 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 13 2017...

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)
 YESTERDAY
  MAXIMUM         61    325 PM  69    1958  57      4       55
  MINIMUM         41    351 AM  30    1972  45     -4       50
                                      1945
  AVERAGE         51                        51      0       53

PRECIPITATION (IN)
  YESTERDAY        0.00          2.47 2002   0.12  -0.12     0.05
  MONTH TO DATE    0.03                      1.49  -1.46     2.49
  SINCE OCT 1      3.01                      4.82  -1.81     6.81
  SINCE JAN 1     25.20                     18.11   7.09    19.25

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       14                        14      0       12
  MONTH TO DATE  149                       176    -27      154
  SINCE DEC 1    149                       176    -27      154
  SINCE JUL 1    488                       740   -252      568

 COOLING
  YESTERDAY        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   2   RESULTANT WIND DIRECTION  NW (300)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     4.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89          1000 PM
 LOWEST     51           600 PM
 AVERAGE    70

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        69      1958
 MINIMUM TEMPERATURE (F)   45        30      1972


SUNRISE AND SUNSET
DECEMBER 14 2017......SUNRISE   717 AM PST   SUNSET   452 PM PST
DECEMBER 15 2017......SUNRISE   717 AM PST   SUNSET   452 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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