Climatological Report (Daily)
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454
CDUS46 KSEW 200828
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
128 AM PDT SUN MAY 20 2018


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 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         72    347 PM  88    1963  65      7       71
  MINIMUM         45    140 PM  38    1975  48     -3       50
  AVERAGE         59                        57      2       61

PRECIPITATION (IN)
  YESTERDAY        0.04          0.70 1968   0.06  -0.02     0.00
  MONTH TO DATE    0.12                      1.19  -1.07     2.16
  SINCE OCT 1     37.39                     32.09   5.30    47.16
  SINCE JAN 1     18.53                     16.69   1.84    26.76

DEGREE DAYS
 HEATING
  YESTERDAY        6                         8     -2        4
  MONTH TO DATE   86                       194   -108      196
  SINCE MAR 1   1064                      1208   -144     1200
  SINCE JUL 1   4097                      4462   -365     4373

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   12                         0     12        0
  SINCE MAR 1     14                         0     14        0
  SINCE JAN 1     14                         0     14        0
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION  SW (240)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION     W (270)
  HIGHEST GUST SPEED    11   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     3.8


SKY COVER
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           300 AM
 LOWEST     49           400 PM
 AVERAGE    71

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        92      1963
 MINIMUM TEMPERATURE (F)   48        40      1960


SUNRISE AND SUNSET
MAY 20 2018...........SUNRISE   526 AM PDT   SUNSET   846 PM PDT
MAY 21 2018...........SUNRISE   525 AM PDT   SUNSET   847 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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