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Climatological Report (Daily)
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CDUS46 KSEW 150855
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
155 AM PDT WED AUG 15 2018


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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 14 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         85    441 PM  95    2010  77      8       73
  MINIMUM         62    607 AM  44    1955  56      6       56
  AVERAGE         74                        66      8       65

PRECIPITATION (IN)
  YESTERDAY        0.00          1.60 1968   0.03  -0.03     0.00
  MONTH TO DATE    0.08                      0.31  -0.23     0.02
  SINCE OCT 1     38.15                     35.42   2.73    48.82
  SINCE JAN 1     19.29                     20.02  -0.73    28.42

DEGREE DAYS
 HEATING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE    1                        14    -13        0
  SINCE JUN 1    112                       207    -95      105
  SINCE JUL 1     10                        63    -53        6

 COOLING
  YESTERDAY        9                         3      6        0
  MONTH TO DATE   86                        42     44      104
  SINCE JUN 1    315                       134    181      234
  SINCE JAN 1    332                       140    192      253
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   N (340)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED     6.5


SKY COVER
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84           400 AM
 LOWEST     37           600 PM
 AVERAGE    61

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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        96      2010
 MINIMUM TEMPERATURE (F)   56        47      1955


SUNRISE AND SUNSET
AUGUST 15 2018........SUNRISE   606 AM PDT   SUNSET   821 PM PDT
AUGUST 16 2018........SUNRISE   607 AM PDT   SUNSET   819 PM PDT


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




$$
National Weather Service National Headquarters
