Climatological Report (Daily)
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CDUS46 KMTR 200825
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
125 AM PDT WED SEP 20 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 19 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    208 PM  93    2000  74     -1       85
                                      1919
  MINIMUM         58    613 AM  46    1954  56      2       61
                                      1947
  AVERAGE         66                        65      1       73

PRECIPITATION (IN)
  YESTERDAY        0.00          0.46 1977   0.01  -0.01     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                        38    -37       38
  SINCE SEP 1      1                        38    -37       38
  SINCE JUL 1     61                       151    -90      141

 COOLING
  YESTERDAY        1                         1      0        8
  MONTH TO DATE  128                        34     94       27
  SINCE SEP 1    128                        34     94       27
  SINCE JAN 1    260                       131    129       92
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  15   RESULTANT WIND DIRECTION   W (280)
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED    15.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           200 AM
 LOWEST     44           100 PM
 AVERAGE    62

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   74        93      2015
                                             1990
 MINIMUM TEMPERATURE (F)   56        48      1965
                                             1954
                                             1947


SUNRISE AND SUNSET
SEPTEMBER 20 2017.....SUNRISE   656 AM PDT   SUNSET   709 PM PDT
SEPTEMBER 21 2017.....SUNRISE   657 AM PDT   SUNSET   707 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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