Climatological Report (Daily)
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000
CDUS46 KSEW 220837
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
137 AM PDT SUN OCT 22 2017


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 21 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         58    832 PM  72    1965  58      0       57
  MINIMUM         45    743 AM  32    1949  45      0       48
  AVERAGE         52                        51      1       53

PRECIPITATION (IN)
  YESTERDAY        1.61R         1.29 1963   0.13   1.48     0.02
  MONTH TO DATE    4.77                      1.98   2.79     7.40
  SINCE OCT 1      4.77                      1.98   2.79     7.40
  SINCE JAN 1     33.78                     24.07   9.71    32.18

SNOWFALL (IN)
  YESTERDAY       MM            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       13                        14     -1       12
  MONTH TO DATE  248                       229     19      204
  SINCE SEP 1    326                       361    -35      313
  SINCE JUL 1    333                       446   -113      334

 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   9   RESULTANT WIND DIRECTION   S (160)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    SW (220)
  HIGHEST GUST SPEED    37   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED    10.8


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 PM
 LOWEST     76          1200 AM
 AVERAGE    88

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   57        70      1965
 MINIMUM TEMPERATURE (F)   45        34      1950


SUNRISE AND SUNSET
OCTOBER 22 2017.......SUNRISE   739 AM PDT   SUNSET   608 PM PDT
OCTOBER 23 2017.......SUNRISE   740 AM PDT   SUNSET   606 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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