Climatological Report (Daily)
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CDUS46 KMTR 110826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1226 AM PST MON DEC 11 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 10 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         66R   311 PM  63    2014  56     10       60
                                      2012
  MINIMUM         34    418 AM  21    2013  36     -2       43
  AVERAGE         50                        46      4       52

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.25
  MONTH TO DATE    0.01                                      0.93
  SINCE OCT 1      2.98                                      5.68
  SINCE JAN 1     31.16                                     20.35

DEGREE DAYS
 HEATING
  YESTERDAY       15                                        13
  MONTH TO DATE  155                                       155
  SINCE DEC 1    155                                       155
  SINCE JUL 1    683                                       659

 COOLING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    530                                       186
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION   E (90)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION     E (90)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           200 AM
 LOWEST     30           300 PM
 AVERAGE    61

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        64      2014
                                             2005
 MINIMUM TEMPERATURE (F)   36        25      2013


SUNRISE AND SUNSET
DECEMBER 11 2017......SUNRISE   716 AM PST   SUNSET   449 PM PST
DECEMBER 12 2017......SUNRISE   717 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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