Climatological Report (Daily)
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CDUS46 KMTR 200826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT FRI OCT 20 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR OCTOBER 19 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         63    238 PM  81    2013  74    -11       77
  MINIMUM         53    617 AM  38    1998  43     10       43
  AVERAGE         58                        58      0       60

PRECIPITATION (IN)
  YESTERDAY        0.19                                      0.00
  MONTH TO DATE    0.19                                      1.64
  SINCE OCT 1      0.19                                      1.64
  SINCE JAN 1     28.37                                     16.31

DEGREE DAYS
 HEATING
  YESTERDAY        7                                         5
  MONTH TO DATE   84                                        92
  SINCE SEP 1    121                                       134
  SINCE JUL 1    131                                       191

 COOLING
  YESTERDAY        0                                         0
  MONTH TO DATE    1                                         5
  SINCE SEP 1    133                                        67
  SINCE JAN 1    515                                       186
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  11   RESULTANT WIND DIRECTION  SW (230)
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    41   HIGHEST GUST DIRECTION    SW (240)
  AVERAGE WIND SPEED    12.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1200 AM
 LOWEST     72          1000 AM
 AVERAGE    83

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        87      2015
 MINIMUM TEMPERATURE (F)   42        36      2008


SUNRISE AND SUNSET
OCTOBER 20 2017.......SUNRISE   723 AM PDT   SUNSET   624 PM PDT
OCTOBER 21 2017.......SUNRISE   724 AM PDT   SUNSET   623 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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