Climatological Report (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CDUS46 KSEW 210832
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1232 AM PST SUN DEC 21 2014


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         55   1047 PM  57    2009  45     10       47
                                      1973
  MINIMUM         44    510 AM  14    2008  35      9       33
                                      1990
  AVERAGE         50                        40     10       40

PRECIPITATION (IN)
  YESTERDAY        0.77          1.93 1955   0.16   0.61     0.22
  MONTH TO DATE    3.48                      3.52  -0.04     0.92
  SINCE OCT 1     15.07                     13.57   1.50     6.25
  SINCE JAN 1     47.19                     35.66  11.53    31.82

SNOWFALL (IN)
  YESTERDAY        0.0           3.0  2008                   1.1
  MONTH TO DATE    0.0                                       1.1
  SINCE OCT 1      0.8                                       1.1
  SINCE JUL 1      0.8                                       1.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       15                        25    -10       25
  MONTH TO DATE  349                       485   -136      538
  SINCE DEC 1    349                       485   -136      538
  SINCE JUL 1   1189                      1668   -479     1560

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    369                       189    180      385
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION  SE (140)
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    46   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED    12.4


SKY COVER
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           100 PM
 LOWEST     83           100 AM
 AVERAGE    88

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        56      2005
 MINIMUM TEMPERATURE (F)   35        12      1990


SUNRISE AND SUNSET
DECEMBER 21 2014......SUNRISE   754 AM PST   SUNSET   421 PM PST
DECEMBER 22 2014......SUNRISE   754 AM PST   SUNSET   421 PM PST


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




$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.