Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 220825
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1225 AM PST MON DEC 22 2014


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 21 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         65    210 PM  71    1999  55     10       63
  MINIMUM         52   1159 PM  21    1998  36     16       31
  AVERAGE         59                        45     14       47

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  MONTH TO DATE   10.14                                      0.47
  SINCE JUL 1     12.77                                      2.20
  SINCE JAN 1     21.04                                      4.17

DEGREE DAYS
 HEATING
  YESTERDAY        6                                        18
  MONTH TO DATE  222                                       481
  SINCE DEC 1    222                                       481
  SINCE JUL 1    695                                      1160

 COOLING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    267                                       303
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION   W (250)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     7.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     87           200 PM
 AVERAGE    94

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        68      1999
 MINIMUM TEMPERATURE (F)   36        19      1998


SUNRISE AND SUNSET
DECEMBER 22 2014......SUNRISE   723 AM PST   SUNSET   453 PM PST
DECEMBER 23 2014......SUNRISE   723 AM PST   SUNSET   454 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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