Climatological Report (Daily)
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000
CDUS46 KMTR 130050
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
449 PM PST TUE DEC 12 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 12 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         60    347 PM  75    1958  57      3       55
  MINIMUM         42    440 AM  29    1972  45     -3       49
  AVERAGE         51                        51      0       52

PRECIPITATION (IN)
  TODAY            0.00          1.16 2006   0.12  -0.12     0.00
  MONTH TO DATE    0.03                      1.37  -1.34     2.44
  SINCE OCT 1      3.01                      4.70  -1.69     6.76
  SINCE JAN 1     25.20                     17.99   7.21    19.20

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                        14      0       13
  MONTH TO DATE  135                       162    -27      142
  SINCE DEC 1    135                       162    -27      142
  SINCE JUL 1    474                       726   -252      556

 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  NE (40)
  HIGHEST WIND SPEED     9   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    10   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     2.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           800 AM
 LOWEST     65           300 AM
 AVERAGE    76

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        69      1958
 MINIMUM TEMPERATURE (F)   45        30      1972
                                             1945


SUNRISE AND SUNSET
DECEMBER 12 2017......SUNRISE   715 AM PST   SUNSET   451 PM PST
DECEMBER 13 2017......SUNRISE   716 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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