NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-30 · 2026-11-01 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-11-01 03:27:00 EST · Product id iem:CDUS46-KSEW-010827:SEA:2026-10-31:final · IEM archive
Product id iem:CDUS46-KSEW-010827:SEA:2026-10-31:final · iem-afos · IEM archive
SHA-256 6748b2311c01dc7e4b3b2b5bd73f4e16297eb9eb8d7afd09eee2215985fb49cf
Product text
CDUS46 KSEW 010827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT SUN NOV 01 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 31 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 54 233 PM 71 1949 56 -2 56
MINIMUM 34 642 AM 30 2003 44 -10 43
2006
AVERAGE 44 50 -6 50
PRECIPITATION (IN)
YESTERDAY 0.00 1.30 2015 0.17 -0.17 0.61
MONTH TO DATE 1.29 3.91 -2.62 3.70
SINCE OCT 1 1.29 3.91 -2.62 3.70
SINCE JAN 1 22.88 27.31 -4.43 19.97
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 0
DEGREE DAYS
HEATING
YESTERDAY 21 15 6 15
MONTH TO DATE 323 349 -26 354
SINCE SEP 1 456 451 5 405
SINCE JUL 1 481 506 -25 429
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 5 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 100 AM
LOWEST 69 200 PM
AVERAGE 85
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 67 1981
MINIMUM TEMPERATURE (F) 44 30 2003
SUNRISE AND SUNSET
NOVEMBER 1 2026......SUNRISE 653 AM PST SUNSET 452 PM PST
NOVEMBER 2 2026......SUNRISE 655 AM PST SUNSET 450 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS46-KSEW-010116:SEA:2026-10-31:interim · iem-afos · IEM archive
SHA-256 36a89b6ef078af07fefc856fccfdb3fad74c664ea5231d0db596e7e00a5ea2f0
Product text
CDUS46 KSEW 010116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT SAT OCT 31 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 31 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 54 233 PM 71 1949 56 -2 56
MINIMUM 34 642 AM 30 2003 44 -10 43
2006
AVERAGE 44 50 -6 50
PRECIPITATION (IN)
TODAY 0.00 1.30 2015 0.17 -0.17 0.61
MONTH TO DATE 1.29 3.91 -2.62 3.70
SINCE OCT 1 1.29 3.91 -2.62 3.70
SINCE JAN 1 22.88 27.31 -4.43 19.97
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 21 15 6 15
MONTH TO DATE 323 349 -26 354
SINCE SEP 1 456 451 5 405
SINCE JUL 1 481 506 -25 429
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 3 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 5.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 100 AM
LOWEST 69 200 PM
AVERAGE 85
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 67 1981
MINIMUM TEMPERATURE (F) 44 30 2003
SUNRISE AND SUNSET
OCTOBER 31 2026.......SUNRISE 752 AM PDT SUNSET 553 PM PDT
NOVEMBER 1 2026......SUNRISE 753 AM PDT SUNSET 552 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/2026-10-31 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.