Climatological Report (Daily)
Issued by NWS

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427
CDUS46 KMTR 180027
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
527 PM PDT TUE JUL 17 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JULY 17 2018...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         78    337 PM  99    2003  78      0       86
  MINIMUM         54    144 AM  47    2009  53      1       58
  AVERAGE         66                        65      1       72

PRECIPITATION (IN)
  TODAY            0.00                                      0.00
  MONTH TO DATE    0.00                                      0.00
  SINCE OCT 1     15.80                                     37.11
  SINCE JAN 1     12.77                                     28.16

DEGREE DAYS
 HEATING
  TODAY            0                                         0
  MONTH TO DATE    9                                         2
  SINCE JUN 1     67                                        19
  SINCE JUL 1      9                                         2

 COOLING
  TODAY            1                                         7
  MONTH TO DATE   46                                        77
  SINCE JUN 1     79                                       200
  SINCE JAN 1     84                                       234
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION  SW (240)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1200 AM
 LOWEST     58           200 PM
 AVERAGE    76

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        95      1998
 MINIMUM TEMPERATURE (F)   53        50      2012
                                             2009


SUNRISE AND SUNSET
JULY 17 2018..........SUNRISE   600 AM PDT   SUNSET   831 PM PDT
JULY 18 2018..........SUNRISE   600 AM PDT   SUNSET   830 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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