Climatological Report (Daily)
Issued by NWS

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402
CDUS46 KMTR 260837
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
137 AM PDT TUE SEP 26 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 25 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         87    320 PM  99    2016  79      8       99
  MINIMUM         43    609 AM  37    2005  47     -4       49
  AVERAGE         65                        63      2       74

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        0                                         0
  MONTH TO DATE   31                                        33
  SINCE SEP 1     31                                        33
  SINCE JUL 1     41                                        90

 COOLING
  YESTERDAY        0                                         9
  MONTH TO DATE  117                                        44
  SINCE SEP 1    117                                        44
  SINCE JAN 1    499                                       163
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION  SW (210)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     4.8


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    86           600 AM
 LOWEST     16           300 PM
 AVERAGE    51

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        99      2016
                                             2009
 MINIMUM TEMPERATURE (F)   47        43      2013


SUNRISE AND SUNSET
SEPTEMBER 26 2017.....SUNRISE   701 AM PDT   SUNSET   659 PM PDT
SEPTEMBER 27 2017.....SUNRISE   702 AM PDT   SUNSET   658 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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