562
CDUS46 KSEW 170826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT THU APR 17 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 16 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 61 411 PM 81 1947 59 2 54
1999
MINIMUM 45 551 AM 34 1960 43 2 40
1972
1976
AVERAGE 53 51 2 47
PRECIPITATION (IN)
YESTERDAY 0.00 0.95 1992 0.11 -0.11 T
MONTH TO DATE 1.95 1.86 0.09 0.40
SINCE OCT 1 25.91 31.51 -5.60 30.27
SINCE JAN 1 12.51 15.57 -3.06 13.12
SNOWFALL (IN)
YESTERDAY 0.0 1.1 1972 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 2.3 0.3
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 12 14 -2 18
MONTH TO DATE 220 240 -20 249
SINCE MAR 1 766 797 -31 798
SINCE JUL 1 3923 3844 79 3709
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 10.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 500 AM
LOWEST 32 500 PM
AVERAGE 57
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 80 2016
2021
MINIMUM TEMPERATURE (F) 43 33 1964
SUNRISE AND SUNSET
APRIL 17 2025.........SUNRISE 616 AM PDT SUNSET 802 PM PDT
APRIL 18 2025.........SUNRISE 614 AM PDT SUNSET 803 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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