NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-28 · 2026-10-30 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-30 04:27:00 EDT · Product id iem:CDUS46-KSEW-300827:SEA:2026-10-29:final · IEM archive
Product id iem:CDUS46-KSEW-300827:SEA:2026-10-29:final · iem-afos · IEM archive
SHA-256 a683700727f0a8aa02a306db7feafae2a0b06d5be4144eac2b467af04b3efef5
Product text
CDUS46 KSEW 300827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT FRI OCT 30 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 29 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 55 246 PM 65 1986 56 -1 58
1987
MINIMUM 43 618 AM 31 1970 44 -1 46
1971
AVERAGE 49 50 -1 52
PRECIPITATION (IN)
YESTERDAY 0.08 1.24 1975 0.16 -0.08 0.00
MONTH TO DATE 0.75 3.56 -2.81 3.09
SINCE OCT 1 0.75 3.56 -2.81 3.09
SINCE JAN 1 22.34 26.96 -4.62 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 13
MONTH TO DATE 283 319 -36 321
SINCE SEP 1 416 421 -5 372
SINCE JUL 1 441 476 -35 396
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 4 RESULTANT WIND DIRECTION SE (130)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 6.0
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 PM
LOWEST 55 200 PM
AVERAGE 74
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 66 1967
MINIMUM TEMPERATURE (F) 44 30 1991
SUNRISE AND SUNSET
OCTOBER 30 2026.......SUNRISE 750 AM PDT SUNSET 555 PM PDT
OCTOBER 31 2026.......SUNRISE 752 AM PDT SUNSET 553 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-300116:SEA:2026-10-29:interim · iem-afos · IEM archive
SHA-256 76cd9292275fd2f0ac96ca6cae78881360ddb6972baed37db1b237ad7b71b9ed
Product text
CDUS46 KSEW 300116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT THU OCT 29 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 29 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 55 246 PM 65 1986 56 -1 58
1987
MINIMUM 43 618 AM 31 1970 44 -1 46
1971
AVERAGE 49 50 -1 52
PRECIPITATION (IN)
TODAY 0.06 1.24 1975 0.16 -0.10 0.00
MONTH TO DATE 0.73 3.56 -2.83 3.09
SINCE OCT 1 0.73 3.56 -2.83 3.09
SINCE JAN 1 22.32 26.96 -4.64 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 16 15 1 13
MONTH TO DATE 283 319 -36 321
SINCE SEP 1 416 421 -5 372
SINCE JUL 1 441 476 -35 396
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 6 RESULTANT WIND DIRECTION SE (130)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 200 AM
LOWEST 55 200 PM
AVERAGE 73
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 56 66 1967
MINIMUM TEMPERATURE (F) 44 30 1991
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.
$$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/2026-10-29 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.