NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-03 · 2026-10-05 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-05 04:27:00 EDT · Product id iem:CDUS46-KSEW-050827:SEA:2026-10-04:final · IEM archive
Product id iem:CDUS46-KSEW-050827:SEA:2026-10-04:final · iem-afos · IEM archive
SHA-256 41c8dd59c3371fcd7b96ee442e5c809c5f71aa79a08225d7ec09fc8fef930f56
Product text
CDUS46 KSEW 050827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT MON OCT 05 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 4 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 359 PM 76 1966 65 4 65
MINIMUM 51 425 AM 38 1957 50 1 53
AVERAGE 60 57 3 59
PRECIPITATION (IN)
YESTERDAY 0.00 0.92 1950 0.09 -0.09 T
MONTH TO DATE 0.00 0.33 -0.33 0.30
SINCE OCT 1 0.00 0.33 -0.33 0.30
SINCE JAN 1 21.59 23.73 -2.14 16.57
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 5 8 -3 6
MONTH TO DATE 17 29 -12 21
SINCE SEP 1 150 131 19 72
SINCE JUL 1 175 186 -11 96
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 2 30 -28 34
SINCE JAN 1 267 263 4 328
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 4.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 500 AM
LOWEST 61 300 PM
AVERAGE 81
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 82 1980
MINIMUM TEMPERATURE (F) 50 38 1974
SUNRISE AND SUNSET
OCTOBER 5 2026.......SUNRISE 714 AM PDT SUNSET 640 PM PDT
OCTOBER 6 2026.......SUNRISE 715 AM PDT SUNSET 638 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS46-KSEW-050117:SEA:2026-10-04:interim · iem-afos · IEM archive
SHA-256 c2da9643ac574e91529d3e955fd1ca430092e6919df3be5b5e72c0a30d1bcca9
Product text
CDUS46 KSEW 050117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT SUN OCT 04 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 4 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 69 359 PM 76 1966 65 4 65
MINIMUM 51 425 AM 38 1957 50 1 53
AVERAGE 60 57 3 59
PRECIPITATION (IN)
TODAY 0.00 0.92 1950 0.09 -0.09 T
MONTH TO DATE 0.00 0.33 -0.33 0.30
SINCE OCT 1 0.00 0.33 -0.33 0.30
SINCE JAN 1 21.59 23.73 -2.14 16.57
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 5 8 -3 6
MONTH TO DATE 17 29 -12 21
SINCE SEP 1 150 131 19 72
SINCE JUL 1 175 186 -11 96
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 2 30 -28 34
SINCE JAN 1 267 263 4 328
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 500 AM
LOWEST 61 300 PM
AVERAGE 81
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 82 1980
MINIMUM TEMPERATURE (F) 50 38 1974
SUNRISE AND SUNSET
OCTOBER 4 2026.......SUNRISE 713 AM PDT SUNSET 642 PM PDT
OCTOBER 5 2026.......SUNRISE 714 AM PDT SUNSET 640 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Settlement source: the final NWS Climatological Report (CLI) for station KSEA for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KSEA/2026-10-04 with links to the NWS product and the IEM archive. A CORRECTED re-issue published before the settlement time supersedes earlier issues.
The settlement value for a date is the latest final CLI issued for that date; a corrected re-issue supersedes earlier issues. Interim same-day products never settle. This is the same rule that fills values.nwsOfficial in /api/station/{icao}/daily.
Every issue is stored verbatim as received - nothing is edited or re-derived. Products are held from 2026-09-01 (backfilled from the IEM AFOS archive) and ingested live from api.weather.gov since 2026-11-10, polled every 30 minutes. A date with no final CLI 14 hours after local midnight is reported as not_issued rather than filled in.