583
CDUS46 KSEW 300130
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
630 PM PDT MON SEP 29 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 29 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 63 355 PM 81 1992 67 -4 63
1993
MINIMUM 59 932 AM 37 1954 51 8 49
AVERAGE 61 59 2 56
PRECIPITATION (IN)
TODAY 0.09 0.92 1951 0.07 0.02 0.00
MONTH TO DATE 0.58 1.53 -0.95 0.62
SINCE OCT 1 29.49 39.26 -9.77 35.93
SINCE JAN 1 16.09 23.32 -7.23 18.78
SNOWFALL (IN)
TODAY MM MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 4 6 -2 9
MONTH TO DATE 46 97 -51 99
SINCE SEP 1 46 97 -51 99
SINCE JUL 1 70 152 -82 137
COOLING
TODAY 0 0 0 0
MONTH TO DATE 34 30 4 42
SINCE SEP 1 34 30 4 42
SINCE JAN 1 328 263 65 315
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (160)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 900 AM
LOWEST 72 200 AM
AVERAGE 81
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 82 1992
MINIMUM TEMPERATURE (F) 51 36 1950
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 706 AM PDT SUNSET 652 PM PDT
SEPTEMBER 30 2025.....SUNRISE 707 AM PDT SUNSET 650 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page