Climatological Report (Daily)
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734
CDUS46 KSEW 200831
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1231 AM PST SAT JAN 20 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 19 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         46    728 PM  62    2005  48     -2       50
  MINIMUM         38    329 AM  18    1954  37      1       41
  AVERAGE         42                        42      0       46

PRECIPITATION (IN)
  YESTERDAY        0.03          2.26 1967   0.18  -0.15     0.09
  MONTH TO DATE    3.99                      3.59   0.40     4.04
  SINCE OCT 1     22.85                     18.99   3.86    24.44
  SINCE JAN 1      3.99                      3.59   0.40     4.04

SNOWFALL (IN)
  YESTERDAY        0.0           3.5  1996                   0.0
  MONTH TO DATE    0.0                                       3.0
  SINCE OCT 1      3.0                                       4.0
  SINCE JUL 1      3.0                                       4.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       23                        23      0       19
  MONTH TO DATE  366                       445    -79      569
  SINCE DEC 1   1135                      1200    -65     1399
  SINCE JUL 1   2124                      2383   -259     2250

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


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   S (170)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    11.1


SKY COVER
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           300 AM
 LOWEST     65           500 PM
 AVERAGE    75

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        64      1981
 MINIMUM TEMPERATURE (F)   37        16      1962
                                             1954


SUNRISE AND SUNSET
JANUARY 20 2018.......SUNRISE   748 AM PST   SUNSET   453 PM PST
JANUARY 21 2018.......SUNRISE   747 AM PST   SUNSET   454 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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