Climatological Report (Daily)
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000
CDUS46 KMTR 210845
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
145 AM PDT THU SEP 21 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 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         71    200 PM  93    2015  74     -3       73
                                      1990
  MINIMUM         59   1159 PM  48    1965  56      3       58
                                      1954
                                      1947
  AVERAGE         65                        65      0       66

PRECIPITATION (IN)
  YESTERDAY        0.00          0.08 2005   0.00   0.00     0.00
  MONTH TO DATE    0.22                      0.08   0.14     0.00
  SINCE OCT 1     31.14                     20.56  10.58    17.23
  SINCE JAN 1     22.19                     13.20   8.99    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                        40    -39       38
  SINCE SEP 1      1                        40    -39       38
  SINCE JUL 1     61                       153    -92      141

 COOLING
  YESTERDAY        0                         1     -1        1
  MONTH TO DATE  128                        35     93       28
  SINCE SEP 1    128                        35     93       28
  SINCE JAN 1    260                       132    128       93
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  13   RESULTANT WIND DIRECTION   W (270)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    13.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           600 AM
 LOWEST     64          1200 AM
 AVERAGE    77

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   74        95      2003
 MINIMUM TEMPERATURE (F)   56        45      1955


SUNRISE AND SUNSET
SEPTEMBER 21 2017.....SUNRISE   657 AM PDT   SUNSET   707 PM PDT
SEPTEMBER 22 2017.....SUNRISE   658 AM PDT   SUNSET   706 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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