Climatological Report (Daily)
Issued by NWS

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CDUS46 KMTR 211245
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
445 AM PST SUN JAN 21 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 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         58    327 PM  71    2014  55      3       56
  MINIMUM         29    742 AM  25    2007  37     -8       47
  AVERAGE         44                        46     -2       52

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.79
  MONTH TO DATE    2.70                                     10.42
  SINCE OCT 1      5.73                                     19.37
  SINCE JAN 1      2.70                                     10.42

DEGREE DAYS
 HEATING
  YESTERDAY       21                                        13
  MONTH TO DATE  287                                       325
  SINCE DEC 1    835                                       870
  SINCE JUL 1   1363                                      1374

 COOLING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1      0                                         0
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION  SW (240)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED     2.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 AM
 LOWEST     40           300 PM
 AVERAGE    70

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        68      2007
 MINIMUM TEMPERATURE (F)   37        26      2008


SUNRISE AND SUNSET
JANUARY 21 2018.......SUNRISE   722 AM PST   SUNSET   520 PM PST
JANUARY 22 2018.......SUNRISE   721 AM PST   SUNSET   521 PM PST


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




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