NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-27 · 2026-10-29 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-29 04:33:00 EDT · Product id iem:CDUS46-KSEW-290833:SEA:2026-10-28:final · IEM archive
Product id iem:CDUS46-KSEW-290833:SEA:2026-10-28:final · iem-afos · IEM archive
SHA-256 effd1aae57575eb80f515d92f0be3ecb15562683c7d8326967fccbe80a5a088a
Product text
CDUS46 KSEW 290833
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
133 AM PDT THU OCT 29 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 28 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 54 256 PM 68 2017 56 -2 56
MINIMUM 44 1159 PM 29 1946 44 0 38
AVERAGE 49 50 -1 47
PRECIPITATION (IN)
YESTERDAY 0.15 1.99 2021 0.17 -0.02 0.28
MONTH TO DATE 0.67 3.40 -2.73 3.09
SINCE OCT 1 0.67 3.40 -2.73 3.09
SINCE JAN 1 22.26 26.80 -4.54 19.36
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 16 15 1 18
MONTH TO DATE 267 304 -37 308
SINCE SEP 1 400 406 -6 359
SINCE JUL 1 425 461 -36 383
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 10 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 11.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1200 AM
LOWEST 64 300 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 65 1986
1987
MINIMUM TEMPERATURE (F) 44 31 1970
1971
SUNRISE AND SUNSET
OCTOBER 29 2026.......SUNRISE 749 AM PDT SUNSET 556 PM PDT
OCTOBER 30 2026.......SUNRISE 750 AM PDT SUNSET 555 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-290116:SEA:2026-10-28:interim · iem-afos · IEM archive
SHA-256 a85c8ce7f5d02a7147f9692f6038ccdca0536323f2ee81c3588efeff83d1a786
Product text
CDUS46 KSEW 290116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT WED OCT 28 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 28 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 54 256 PM 68 2017 56 -2 56
MINIMUM 47 838 AM 29 1946 44 3 38
AVERAGE 51 50 1 47
PRECIPITATION (IN)
TODAY 0.10 1.99 2021 0.17 -0.07 0.28
MONTH TO DATE 0.62 3.40 -2.78 3.09
SINCE OCT 1 0.62 3.40 -2.78 3.09
SINCE JAN 1 22.21 26.80 -4.59 19.36
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 14 15 -1 18
MONTH TO DATE 265 304 -39 308
SINCE SEP 1 398 406 -8 359
SINCE JUL 1 423 461 -38 383
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 12 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 12.7
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1200 AM
LOWEST 64 300 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 65 1986
1987
MINIMUM TEMPERATURE (F) 44 31 1970
1971
SUNRISE AND SUNSET
OCTOBER 28 2026.......SUNRISE 747 AM PDT SUNSET 558 PM PDT
OCTOBER 29 2026.......SUNRISE 749 AM PDT SUNSET 556 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/2026-10-28 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.