Climatological Report (Daily)
Issued by NWS

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252
CDUS46 KMTR 212225
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
225 PM PST SUN JAN 21 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 21 2018...
VALID TODAY AS OF 0200 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         54    200 PM  68    2007  55     -1       57
  MINIMUM         29        MM  26    2008  37     -8       47
  AVERAGE         42                        46     -4       52

PRECIPITATION (IN)
  TODAY            0.00                                      0.46
  MONTH TO DATE    2.70                                     10.88
  SINCE OCT 1      5.73                                     19.83
  SINCE JAN 1      2.70                                     10.88

DEGREE DAYS
 HEATING
  TODAY           23                                        13
  MONTH TO DATE  310                                       338
  SINCE DEC 1    858                                       883
  SINCE JUL 1   1386                                      1387

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


WIND (MPH)
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  NE (40)
  HIGHEST WIND SPEED     6   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM
  AVERAGE WIND SPEED     1.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     71           100 PM
 AVERAGE    86

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        68      2014
 MINIMUM TEMPERATURE (F)   37        27      2014


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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