Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 170855
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1255 AM PST WED DEC 17 2014


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 16 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         61   1232 PM  69    2011  55      6       64
  MINIMUM         43   1156 PM  28    2006  36      7       34
  AVERAGE         52                        46      6       49

PRECIPITATION (IN)
  YESTERDAY        0.72                                      0.00
  MONTH TO DATE    9.06                                      0.47
  SINCE JUL 1     11.69                                      2.20
  SINCE JAN 1     19.96                                      4.17

DEGREE DAYS
 HEATING
  YESTERDAY       13                                        16
  MONTH TO DATE  167                                       390
  SINCE DEC 1    167                                       390
  SINCE JUL 1    640                                      1069

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


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION  SE (120)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     7.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           300 AM
 LOWEST     67           300 PM
 AVERAGE    84

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        66      2000
 MINIMUM TEMPERATURE (F)   36        24      2008


SUNRISE AND SUNSET
DECEMBER 17 2014......SUNRISE   720 AM PST   SUNSET   451 PM PST
DECEMBER 18 2014......SUNRISE   720 AM PST   SUNSET   451 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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