National Weather Service - Climate Data

These data are preliminary and have not undergone final quality control by the National Climatic Data Center (NCDC). Therefore, these data are subject to revision. Final and certified climate data can be accessed at the NCDC - http://www.ncdc.noaa.gov.

Climatological Report (Daily)


000
CDUS46 KSEW 210828
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
128 AM PDT SUN APR 21 2019


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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 20 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2019


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         60    546 PM  81    2016  59      1       63
  MINIMUM         47    559 AM  30    1961  43      4       43
  AVERAGE         54                        51      3       53

PRECIPITATION (IN)
  YESTERDAY        T             0.49 1946   0.08  -0.08     0.00
  MONTH TO DATE    3.26                      1.94   1.32     5.34
  SINCE OCT 1     28.36                     30.13  -1.77    36.92
  SINCE JAN 1     13.08                     14.73  -1.65    18.06

SNOWFALL (IN)
  YESTERDAY       MM            MM      MM                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE OCT 1     21.0                                       4.0
  SINCE JUL 1     21.0                                       4.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       11                        14     -3       12
  MONTH TO DATE  247                       308    -61      317
  SINCE MAR 1    759                       882   -123      889
  SINCE JUL 1   3737                      4136   -399     3922

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE MAR 1      6                         0      6        0
  SINCE JAN 1      6                         0      6        0
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION   N (20)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     N (360)
  AVERAGE WIND SPEED     5.0


SKY COVER
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           300 AM
 LOWEST     53           400 PM
 AVERAGE    73

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


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   59        76      1982
 MINIMUM TEMPERATURE (F)   43        29      1951


SUNRISE AND SUNSET
APRIL 21 2019.........SUNRISE   610 AM PDT   SUNSET   807 PM PDT
APRIL 22 2019.........SUNRISE   608 AM PDT   SUNSET   808 PM PDT


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





The U.S. Naval Observatory (USNO) computes astronomical data. Therefore, the NWS does not record, certify, or authenticate astronomical data. Computed times of sunrise, sunset, moonrise, moonset; and twilight, moon phases and other astronomical data are available from USNO's Astronomical Applications Department (http://www.usno.navy.mil). See http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/litigation for information on using these data for legal purposes.