Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 120826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1225 AM PST TUE DEC 12 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 11 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   302 PM  64    2014  56     10       52
                                      2005
  MINIMUM         34    553 AM  25    2013  36     -2       38
  AVERAGE         50                        46      4       45

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  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                                        20
  MONTH TO DATE  170                                       175
  SINCE DEC 1    170                                       175
  SINCE JUL 1    698                                       679

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


WIND (MPH)
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION   E (90)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     7.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           200 AM
 LOWEST     29           300 PM
 AVERAGE    59

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        60      2010
 MINIMUM TEMPERATURE (F)   36        26      2013


SUNRISE AND SUNSET
DECEMBER 12 2017......SUNRISE   717 AM PST   SUNSET   449 PM PST
DECEMBER 13 2017......SUNRISE   717 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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