NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-23 · 2026-10-25 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-25 04:26:00 EDT · Product id iem:CDUS46-KSEW-250826:SEA:2026-10-24:final · IEM archive
Product id iem:CDUS46-KSEW-250826:SEA:2026-10-24:final · iem-afos · IEM archive
SHA-256 66c16a8ce8f4f9d39d4f11184338c57a0a9f9f9dd6ec78091128c340277c47cb
Product text
CDUS46 KSEW 250826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SUN OCT 25 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 24 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 55 356 PM 72 1965 58 -3 58
MINIMUM 40 547 AM 33 1954 45 -5 46
AVERAGE 48 51 -3 52
PRECIPITATION (IN)
YESTERDAY 0.00 1.10 1985 0.15 -0.15 1.04
MONTH TO DATE 0.08 2.75 -2.67 2.10
SINCE OCT 1 0.08 2.75 -2.67 2.10
SINCE JAN 1 21.67 26.15 -4.48 18.37
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 17 14 3 13
MONTH TO DATE 214 247 -33 241
SINCE SEP 1 347 349 -2 292
SINCE JUL 1 372 404 -32 316
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 3 RESULTANT WIND DIRECTION SE (130)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 3.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 100 AM
LOWEST 47 200 PM
AVERAGE 65
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 67 1965
1982
2015
MINIMUM TEMPERATURE (F) 45 31 1954
SUNRISE AND SUNSET
OCTOBER 25 2026.......SUNRISE 743 AM PDT SUNSET 603 PM PDT
OCTOBER 26 2026.......SUNRISE 744 AM PDT SUNSET 601 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-250116:SEA:2026-10-24:interim · iem-afos · IEM archive
SHA-256 ea429769af41c08ac46cf093097a208b3085058e47ff3c9a2b8dbf913d925c9c
Product text
CDUS46 KSEW 250116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT SAT OCT 24 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 24 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 55 356 PM 72 1965 58 -3 58
MINIMUM 40 547 AM 33 1954 45 -5 46
AVERAGE 48 51 -3 52
PRECIPITATION (IN)
TODAY 0.00 1.10 1985 0.15 -0.15 1.04
MONTH TO DATE 0.08 2.75 -2.67 2.10
SINCE OCT 1 0.08 2.75 -2.67 2.10
SINCE JAN 1 21.67 26.15 -4.48 18.37
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 17 14 3 13
MONTH TO DATE 214 247 -33 241
SINCE SEP 1 347 349 -2 292
SINCE JUL 1 372 404 -32 316
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 4 RESULTANT WIND DIRECTION SE (130)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 4.7
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 100 AM
LOWEST 47 200 PM
AVERAGE 65
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 67 1965
1982
2015
MINIMUM TEMPERATURE (F) 45 31 1954
SUNRISE AND SUNSET
OCTOBER 24 2026.......SUNRISE 741 AM PDT SUNSET 605 PM PDT
OCTOBER 25 2026.......SUNRISE 743 AM PDT SUNSET 603 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/2026-10-24 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.