Climatological Report (Daily)
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000
CDUS46 KMTR 210826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1225 AM PST SUN DEC 21 2014


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 20 2014...

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)
 YESTERDAY
  MAXIMUM         58    822 PM  67    1999  55      3       59
  MINIMUM         50    554 AM  25    2008  36     14       29
  AVERAGE         54                        45      9       44

PRECIPITATION (IN)
  YESTERDAY        T                                         0.00
  MONTH TO DATE   10.14                                      0.47
  SINCE JUL 1     12.77                                      2.20
  SINCE JAN 1     21.04                                      4.17

DEGREE DAYS
 HEATING
  YESTERDAY       11                                        21
  MONTH TO DATE  216                                       463
  SINCE DEC 1    216                                       463
  SINCE JUL 1    689                                      1142

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


WIND (MPH)
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION   S (160)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     3.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     86           500 PM
 AVERAGE    93

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        71      1999
 MINIMUM TEMPERATURE (F)   36        21      1998


SUNRISE AND SUNSET
DECEMBER 21 2014......SUNRISE   722 AM PST   SUNSET   453 PM PST
DECEMBER 22 2014......SUNRISE   723 AM PST   SUNSET   453 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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