Climatological Report (Daily)
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CDUS46 KSEW 210834
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1233 AM PST SUN JAN 21 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 20 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         49   1159 PM  64    1981  48      1       52
  MINIMUM         39    527 AM  16    1962  37      2       37
                                      1954
  AVERAGE         44                        42      2       45

PRECIPITATION (IN)
  YESTERDAY        0.08          1.66 1972   0.19  -0.11     0.00
  MONTH TO DATE    4.07                      3.78   0.29     4.04
  SINCE OCT 1     22.93                     19.18   3.75    24.44
  SINCE JAN 1      4.07                      3.78   0.29     4.04

SNOWFALL (IN)
  YESTERDAY        0.0           1.5  1951                   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       21                        23     -2       20
  MONTH TO DATE  387                       468    -81      589
  SINCE DEC 1   1156                      1223    -67     1419
  SINCE JUL 1   2145                      2406   -261     2270

 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  14   RESULTANT WIND DIRECTION   S (180)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED    14.2


SKY COVER
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           500 AM
 LOWEST     61          1000 PM
 AVERAGE    77

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        62      1981
 MINIMUM TEMPERATURE (F)   37        13      1962


SUNRISE AND SUNSET
JANUARY 21 2018.......SUNRISE   747 AM PST   SUNSET   454 PM PST
JANUARY 22 2018.......SUNRISE   746 AM PST   SUNSET   456 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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