Climatological Report (Daily)
Issued by NWS

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000
CDUS46 KMTR 230827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
127 AM PDT SAT SEP 23 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 22 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         73    252 PM  99    2003  79     -6       77
  MINIMUM         39R   426 AM  40    2005  48     -9       45
  AVERAGE         56                        64     -8       61

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.00
  MONTH TO DATE    0.02                                      0.00
  SINCE OCT 1     37.13                                     18.86
  SINCE JAN 1     28.18                                     14.67

DEGREE DAYS
 HEATING
  YESTERDAY        9                                         4
  MONTH TO DATE   29                                        30
  SINCE SEP 1     29                                        30
  SINCE JUL 1     39                                        87

 COOLING
  YESTERDAY        0                                         0
  MONTH TO DATE  117                                        30
  SINCE SEP 1    117                                        30
  SINCE JAN 1    499                                       149
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION  SW (220)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     4.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           300 AM
 LOWEST     38           200 PM
 AVERAGE    62

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79        94      2002
 MINIMUM TEMPERATURE (F)   48        39      2005


SUNRISE AND SUNSET
SEPTEMBER 23 2017.....SUNRISE   658 AM PDT   SUNSET   704 PM PDT
SEPTEMBER 24 2017.....SUNRISE   659 AM PDT   SUNSET   702 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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