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KSEA · 2026-10-03 - NWS CLI
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-02 · 2026-10-04 → · All dates for KSEA · JSON · METAR-derived record
Settlement value - latest final issue
finalFinal issued 2026-10-04 04:26:00 EDT · Product id iem:CDUS46-KSEW-040826:SEA:2026-10-03:final · IEM archive
Every issue for this date, as received
final2026-10-04 04:26:00 EDT · KSEW · CDUS46 KSEW 040826 · 67°F / 54°F / 0 in
Product id iem:CDUS46-KSEW-040826:SEA:2026-10-03:final · iem-afos · IEM archive
SHA-256 d5c9fbbe1ecda33e88030384a81715ee1fac5e6f26a99779ed2c4bfe550afee4
Product text
CDUS46 KSEW 040826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SUN OCT 04 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 3 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 67 415 PM 80 1993 65 2 64
MINIMUM 54 1159 PM 39 1949 50 4 50
AVERAGE 61 58 3 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.67 1997 0.08 -0.08 0.00
MONTH TO DATE 0.00 0.24 -0.24 0.30
SINCE OCT 1 0.00 0.24 -0.24 0.30
SINCE JAN 1 21.59 23.64 -2.05 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 0
DEGREE DAYS
HEATING
YESTERDAY 4 7 -3 8
MONTH TO DATE 12 21 -9 15
SINCE SEP 1 145 123 22 66
SINCE JUL 1 170 178 -8 90
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 7 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 300 AM
LOWEST 68 300 PM
AVERAGE 83
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 76 1966
MINIMUM TEMPERATURE (F) 50 38 1957
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.
$$interim 0500 PM2026-10-03 21:17:00 EDT · KSEW · CDUS46 KSEW 040117 · 67°F / 55°F / 0 in
Product id iem:CDUS46-KSEW-040117:SEA:2026-10-03:interim · iem-afos · IEM archive
SHA-256 7d30655e1064e0aa90060299c16727ccf82c013c7e6b7c8d30871d7f46c10167
Product text
CDUS46 KSEW 040117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT SAT OCT 03 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 3 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 67 415 PM 80 1993 65 2 64
MINIMUM 55 1236 AM 39 1949 50 5 50
AVERAGE 61 58 3 57
PRECIPITATION (IN)
TODAY 0.00 0.67 1997 0.08 -0.08 0.00
MONTH TO DATE 0.00 0.24 -0.24 0.30
SINCE OCT 1 0.00 0.24 -0.24 0.30
SINCE JAN 1 21.59 23.64 -2.05 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 4 7 -3 8
MONTH TO DATE 12 21 -9 15
SINCE SEP 1 145 123 22 66
SINCE JUL 1 170 178 -8 90
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 8 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 8.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 300 AM
LOWEST 68 300 PM
AVERAGE 83
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 76 1966
MINIMUM TEMPERATURE (F) 50 38 1957
SUNRISE AND SUNSET
OCTOBER 3 2026.......SUNRISE 711 AM PDT SUNSET 644 PM PDT
OCTOBER 4 2026.......SUNRISE 713 AM PDT SUNSET 642 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$How to cite this page in market rules
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/2026-10-03 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.