Climatological Report (Daily)
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161
CDUS46 KMTR 190830
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT TUE SEP 19 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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         73   1046 AM  93    2009  74     -1       88
  MINIMUM         60   1159 PM  46    1955  56      4       56
  AVERAGE         67                        65      2       72

PRECIPITATION (IN)
  YESTERDAY        0.00          2.29 1959   0.00   0.00     0.00
  MONTH TO DATE    0.22                      0.07   0.15     0.00
  SINCE OCT 1     31.14                     20.55  10.59    17.23
  SINCE JAN 1     22.19                     13.19   9.00    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        0                         2     -2        0
  MONTH TO DATE    1                        36    -35       38
  SINCE SEP 1      1                        36    -35       38
  SINCE JUL 1     61                       149    -88      141

 COOLING
  YESTERDAY        2                         1      1        7
  MONTH TO DATE  127                        33     94       19
  SINCE SEP 1    127                        33     94       19
  SINCE JAN 1    259                       130    129       84
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  16   RESULTANT WIND DIRECTION   W (270)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED    16.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     53           300 PM
 AVERAGE    73

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   74        93      2000
                                             1919
 MINIMUM TEMPERATURE (F)   56        46      1954
                                             1947


SUNRISE AND SUNSET
SEPTEMBER 19 2017.....SUNRISE   655 AM PDT   SUNSET   711 PM PDT
SEPTEMBER 20 2017.....SUNRISE   656 AM PDT   SUNSET   709 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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