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Climatological Report (Daily)
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CDUS46 KSEW 220833
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
132 AM PDT TUE MAY 22 2018


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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 21 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    345 PM  93    1963  66      6       76
  MINIMUM         54    650 AM  39    1960  48      6       52
  AVERAGE         63                        57      6       64

PRECIPITATION (IN)
  YESTERDAY        0.00          0.55 2012   0.06  -0.06     0.00
  MONTH TO DATE    0.12                      1.31  -1.19     2.16
  SINCE OCT 1     37.39                     32.21   5.18    47.16
  SINCE JAN 1     18.53                     16.81   1.72    26.76

DEGREE DAYS
 HEATING
  YESTERDAY        2                         8     -6        1
  MONTH TO DATE   91                       210   -119      199
  SINCE MAR 1   1069                      1224   -155     1203
  SINCE JUL 1   4102                      4478   -376     4376

 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   5   RESULTANT WIND DIRECTION   N (340)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED     5.7


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           400 AM
 LOWEST     44           400 PM
 AVERAGE    64

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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        86      1969
 MINIMUM TEMPERATURE (F)   49        37      1960


SUNRISE AND SUNSET
MAY 22 2018...........SUNRISE   524 AM PDT   SUNSET   848 PM PDT
MAY 23 2018...........SUNRISE   523 AM PDT   SUNSET   849 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
