Climatological Report (Daily)
Issued by NWS

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CDUS46 KMTR 140827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1227 AM PST THU DEC 14 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 13 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         60    126 PM  61    2004  56      4       58
  MINIMUM         28    456 AM  24    2013  36     -8       45
                                      2007
  AVERAGE         44                        46     -2       52

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.05
  MONTH TO DATE    0.01                                      0.98
  SINCE OCT 1      2.98                                      5.73
  SINCE JAN 1     31.16                                     20.40

DEGREE DAYS
 HEATING
  YESTERDAY       21                                        13
  MONTH TO DATE  210                                       203
  SINCE DEC 1    210                                       203
  SINCE JUL 1    738                                       707

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


WIND (MPH)
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  NE (50)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    SE (130)
  AVERAGE WIND SPEED     2.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     47          1200 PM
 AVERAGE    74

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        62      2016
 MINIMUM TEMPERATURE (F)   36        24      2008


SUNRISE AND SUNSET
DECEMBER 14 2017......SUNRISE   718 AM PST   SUNSET   450 PM PST
DECEMBER 15 2017......SUNRISE   719 AM PST   SUNSET   450 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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