Climatological Report (Daily)
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000
CDUS46 KMTR 220852
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
151 AM PDT FRI SEP 22 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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         67   1254 PM  95    2003  74     -7       66
  MINIMUM         56    602 AM  45    1955  56      0       57
  AVERAGE         62                        65     -3       62

PRECIPITATION (IN)
  YESTERDAY        0.00          0.23 2013   0.01  -0.01     0.00
  MONTH TO DATE    0.22                      0.09   0.13     0.00
  SINCE OCT 1     31.14                     20.57  10.57    17.23
  SINCE JAN 1     22.19                     13.21   8.98    12.44

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

DEGREE DAYS
 HEATING
  YESTERDAY        3                         2      1        3
  MONTH TO DATE    4                        42    -38       41
  SINCE SEP 1      4                        42    -38       41
  SINCE JUL 1     64                       155    -91      144

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE  128                        36     92       28
  SINCE SEP 1    128                        36     92       28
  SINCE JAN 1    260                       133    127       93
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  21   RESULTANT WIND DIRECTION   W (280)
  HIGHEST WIND SPEED    36   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    21.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           100 AM
 LOWEST     48          1100 AM
 AVERAGE    64

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   74        91      1946
 MINIMUM TEMPERATURE (F)   56        48      1981
                                             1910


SUNRISE AND SUNSET
SEPTEMBER 22 2017.....SUNRISE   658 AM PDT   SUNSET   706 PM PDT
SEPTEMBER 23 2017.....SUNRISE   658 AM PDT   SUNSET   704 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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