837
CDUS46 KSEW 160830
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
130 AM PDT FRI MAY 16 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 15 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 56 159 PM 88 2023 66 -10 75
MINIMUM 44 500 AM 38 1964 49 -5 51
AVERAGE 50 58 -8 63
PRECIPITATION (IN)
YESTERDAY 0.11 0.81 2011 0.06 0.05 0.00
MONTH TO DATE 0.15 0.98 -0.83 0.28
SINCE OCT 1 26.66 33.81 -7.15 31.04
SINCE JAN 1 13.26 17.87 -4.61 13.89
SNOWFALL (IN)
YESTERDAY 0.0 T 1974 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 0
DEGREE DAYS
HEATING
YESTERDAY 15 8 7 2
MONTH TO DATE 139 138 1 127
SINCE MAR 1 1066 1107 -41 1096
SINCE JUL 1 4223 4154 69 4007
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 7
SINCE MAR 1 0 1 -1 7
SINCE JAN 1 0 1 -1 7
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WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 9.2
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 800 PM
LOWEST 59 1200 PM
AVERAGE 78
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 84 1985
2008
MINIMUM TEMPERATURE (F) 49 40 2003
SUNRISE AND SUNSET
MAY 16 2025...........SUNRISE 531 AM PDT SUNSET 841 PM PDT
MAY 17 2025...........SUNRISE 529 AM PDT SUNSET 843 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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