Climatological Report (Daily)
Issued by NWS

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CDUS46 KMTR 090042
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
441 PM PST THU DEC 8 2016


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 8 2016...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         54    359 PM  65    2014  57     -3       59
  MINIMUM         43    126 AM  19    2009  36      7       45
  AVERAGE         49                        46      3       52

PRECIPITATION (IN)
  TODAY            0.17                                      0.00
  MONTH TO DATE    0.47                                      0.14
  SINCE OCT 1      5.22                                      1.55
  SINCE JAN 1     19.89                                      5.65

DEGREE DAYS
 HEATING
  TODAY           16                                        13
  MONTH TO DATE  136                                       121
  SINCE DEC 1    136                                       121
  SINCE JUL 1    640                                       662

 COOLING
  TODAY            0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    186                                       378
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  11   RESULTANT WIND DIRECTION   E (80)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED    11.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           100 AM
 LOWEST     80           700 AM
 AVERAGE    85

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        70      2012
 MINIMUM TEMPERATURE (F)   36        19      2013


SUNRISE AND SUNSET
DECEMBER  8 2016......SUNRISE   714 AM PST   SUNSET   449 PM PST
DECEMBER  9 2016......SUNRISE   715 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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