Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 190035
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
435 PM PST THU DEC 18 2014


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 18 2014...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         56    313 PM  62    2003  55      1       59
  MINIMUM         50    757 AM  21    2006  36     14       33
  AVERAGE         53                        45      8       46

PRECIPITATION (IN)
  TODAY            T                                         0.00
  MONTH TO DATE    9.29                                      0.47
  SINCE JUL 1     11.92                                      2.20
  SINCE JAN 1     20.19                                      4.17

DEGREE DAYS
 HEATING
  TODAY           12                                        19
  MONTH TO DATE  194                                       424
  SINCE DEC 1    194                                       424
  SINCE JUL 1    667                                      1103

 COOLING
  TODAY            0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    267                                       303
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   E (90)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     E (90)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1200 AM
 LOWEST     83           300 PM
 AVERAGE    88

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        78      1999
 MINIMUM TEMPERATURE (F)   36        21      2006


SUNRISE AND SUNSET
DECEMBER 18 2014......SUNRISE   720 AM PST   SUNSET   451 PM PST
DECEMBER 19 2014......SUNRISE   721 AM PST   SUNSET   452 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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