Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 210845
CLISFO


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1245 AM PST SAT JAN 21 2017


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

...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR JANUARY 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         56   1126 AM  67    1976  57     -1       56
  MINIMUM         11R   128 PM  30    1963  44    -33       47
  AVERAGE         34                        50    -16       52

PRECIPITATION (IN)
  YESTERDAY        1.19          2.49 1964   0.12   1.07     0.00
  MONTH TO DATE    8.05                      2.75   5.30     4.94
  SINCE OCT 1     17.00                     10.11   6.89     9.73
  SINCE JAN 1      8.05                      2.75   5.30     4.94

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

DEGREE DAYS
 HEATING
  YESTERDAY       31                        15     16       13
  MONTH TO DATE  294                       300     -6      256
  SINCE DEC 1    731                       746    -15      699
  SINCE JUL 1   1145                      1310   -165     1056

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   8   RESULTANT WIND DIRECTION   S (180)
  HIGHEST WIND SPEED    38   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    49   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED    13.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           100 AM
 LOWEST     68          1000 PM
 AVERAGE    77

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


THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        68      2014
 MINIMUM TEMPERATURE (F)   44        30      1962
                                             1937


SUNRISE AND SUNSET
JANUARY 21 2017.......SUNRISE   721 AM PST   SUNSET   522 PM PST
JANUARY 22 2017.......SUNRISE   720 AM PST   SUNSET   523 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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