Climatological Report (Daily)
Issued by NWS
Issued by NWS
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135
CDUS46 KSEW 220116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT MON JUL 21 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 21 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 77 423 PM 97 2006 79 -2 77
MINIMUM 54 123 AM 48 1951 58 -4 59
AVERAGE 66 68 -2 68
PRECIPITATION (IN)
TODAY 0.00 0.29 2007 0.02 -0.02 0.00
MONTH TO DATE T 0.44 -0.44 0.00
SINCE OCT 1 27.76 36.60 -8.84 33.49
SINCE JAN 1 14.36 20.66 -6.30 16.34
SNOWFALL (IN)
TODAY 0.0 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 0
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 16 27 -11 2
SINCE JUN 1 110 145 -35 134
SINCE JUL 1 16 27 -11 2
COOLING
TODAY 1 4 -3 3
MONTH TO DATE 88 56 32 149
SINCE JUN 1 130 85 45 168
SINCE JAN 1 133 95 38 175
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 4.6
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 300 AM
LOWEST 51 1200 PM
AVERAGE 71
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 96 2006
MINIMUM TEMPERATURE (F) 58 49 1954
1973
SUNRISE AND SUNSET
JULY 21 2025..........SUNRISE 535 AM PDT SUNSET 856 PM PDT
JULY 22 2025..........SUNRISE 536 AM PDT SUNSET 855 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$