Climatological Report (Daily)
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000
CDUS46 KSEW 180833
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
133 AM PDT WED OCT 18 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         60    251 PM  74    1989  59      1       59
  MINIMUM         49   1159 PM  34    1949  46      3       50
  AVERAGE         55                        52      3       55

PRECIPITATION (IN)
  YESTERDAY        0.06          1.24 2009   0.11  -0.05     0.17
  MONTH TO DATE    0.64                      1.50  -0.86     5.89
  SINCE OCT 1      0.64                      1.50  -0.86     5.89
  SINCE JAN 1     29.65                     23.59   6.06    30.67

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE OCT 1      0.0                                       0.0
  SINCE JUL 1      0.0                                       0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       10                        13     -3       10
  MONTH TO DATE  198                       176     22      158
  SINCE SEP 1    276                       308    -32      267
  SINCE JUL 1    283                       393   -110      288

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE SEP 1     75                        21     54        3
  SINCE JAN 1    392                       189    203      291
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   S (190)
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    40   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    12.7


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1000 AM
 LOWEST     53           300 PM
 AVERAGE    73

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        70      1974
 MINIMUM TEMPERATURE (F)   45        32      1949


SUNRISE AND SUNSET
OCTOBER 18 2017.......SUNRISE   733 AM PDT   SUNSET   615 PM PDT
OCTOBER 19 2017.......SUNRISE   734 AM PDT   SUNSET   613 PM PDT


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




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