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Climatological Report (Daily)
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CDUS46 KMTR 110027
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
426 PM PST MON DEC 10 2018


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...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 10 2018...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         57    230 PM  66    2017  56      1       66
  MINIMUM         47    258 AM  21    2013  36     11       34
  AVERAGE         52                        46      6       50

PRECIPITATION (IN)
  TODAY            0.01                                      0.00
  MONTH TO DATE    0.64                                      0.01
  SINCE OCT 1      1.90                                      2.98
  SINCE JAN 1     14.67                                     31.16

DEGREE DAYS
 HEATING
  TODAY           13                                        15
  MONTH TO DATE  158                                       155
  SINCE DEC 1    158                                       155
  SINCE JUL 1    725                                       683

 COOLING
  TODAY            0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    182                                       530
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION  SW (230)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    10   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     3.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           100 AM
 LOWEST     72           200 PM
 AVERAGE    83

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        66      2017
 MINIMUM TEMPERATURE (F)   36        25      2013


SUNRISE AND SUNSET
DECEMBER 10 2018......SUNRISE   715 AM PST   SUNSET   449 PM PST
DECEMBER 11 2018......SUNRISE   716 AM PST   SUNSET   449 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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National Weather Service National Headquarters
