Climatological Report (Daily)
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000
CDUS46 KMTR 120826
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1225 AM PST TUE DEC 12 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 11 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         65    418 PM  74    1958  57      8       54
  MINIMUM         44    541 AM  26    1972  45     -1       47
  AVERAGE         55                        51      4       51

PRECIPITATION (IN)
  YESTERDAY        0.00          3.43 2014   0.12  -0.12     0.00
  MONTH TO DATE    0.03                      1.25  -1.22     2.44
  SINCE OCT 1      3.01                      4.58  -1.57     6.76
  SINCE JAN 1     25.20                     17.87   7.33    19.20

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       10                        14     -4       14
  MONTH TO DATE  121                       148    -27      129
  SINCE DEC 1    121                       148    -27      129
  SINCE JUL 1    460                       712   -252      543

 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  SE (130)
  HIGHEST WIND SPEED     7   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED     9   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     2.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77          1100 PM
 LOWEST     34           500 PM
 AVERAGE    56

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        75      1958
 MINIMUM TEMPERATURE (F)   45        29      1972


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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