Climatological Report (Daily)
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CDUS46 KMTR 210826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
126 AM PDT FRI SEP 21 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 20 2018...

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)
 YESTERDAY
  MAXIMUM         87    348 PM  97    2011  79      8       78
  MINIMUM         44    547 AM  38    2004  49     -5       51
  AVERAGE         66                        64      2       65

PRECIPITATION (IN)
  YESTERDAY        0.00                                       T
  MONTH TO DATE    T                                         0.02
  SINCE OCT 1     15.80                                     37.13
  SINCE JAN 1     12.77                                     28.18

DEGREE DAYS
 HEATING
  YESTERDAY        0                                         0
  MONTH TO DATE   36                                        13
  SINCE SEP 1     36                                        13
  SINCE JUL 1     77                                        23

 COOLING
  YESTERDAY        1                                         0
  MONTH TO DATE    1                                       117
  SINCE SEP 1      1                                       117
  SINCE JAN 1    153                                       499
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION   S (200)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     4.2


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    93           400 AM
 LOWEST     16           300 PM
 AVERAGE    55

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79       102      2003
 MINIMUM TEMPERATURE (F)   48        41      2017
                                             2012


SUNRISE AND SUNSET
SEPTEMBER 21 2018.....SUNRISE   656 AM PDT   SUNSET   707 PM PDT
SEPTEMBER 22 2018.....SUNRISE   657 AM PDT   SUNSET   706 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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