Climatological Report (Daily)
Issued by NWS

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CDUS46 KMTR 201245
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
445 AM PST SAT JAN 20 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 19 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         56    242 PM  70    2014  55      1       58
  MINIMUM         35    756 AM  24    2007  37     -2       47
  AVERAGE         46                        46      0       53

PRECIPITATION (IN)
  YESTERDAY        0.00                                      0.46
  MONTH TO DATE    2.70                                      9.63
  SINCE OCT 1      5.73                                     18.58
  SINCE JAN 1      2.70                                      9.63

DEGREE DAYS
 HEATING
  YESTERDAY       19                                        12
  MONTH TO DATE  266                                       312
  SINCE DEC 1    814                                       857
  SINCE JUL 1   1342                                      1361

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


WIND (MPH)
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION   W (280)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED     5.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     55           200 PM
 AVERAGE    78

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        71      2014
 MINIMUM TEMPERATURE (F)   37        25      2007


SUNRISE AND SUNSET
JANUARY 20 2018.......SUNRISE   722 AM PST   SUNSET   519 PM PST
JANUARY 21 2018.......SUNRISE   722 AM PST   SUNSET   520 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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