NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-09-30 · 2026-10-02 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-02 04:27:00 EDT · Product id iem:CDUS46-KSEW-020827:SEA:2026-10-01:final · IEM archive
Product id iem:CDUS46-KSEW-020827:SEA:2026-10-01:final · iem-afos · IEM archive
SHA-256 67de45f031ccd14b99d6ed170d4812d5c31b15d231de2dc73e102a050c6e75ee
Product text
CDUS46 KSEW 020827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT FRI OCT 02 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 1 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 68 349 PM 89 1987 66 2 67
MINIMUM 51 445 AM 35 1950 51 0 54
AVERAGE 60 58 2 61
PRECIPITATION (IN)
YESTERDAY 0.00 0.56 1981 0.08 -0.08 0.30
MONTH TO DATE 0.00 0.08 -0.08 0.30
SINCE OCT 1 0.00 0.08 -0.08 0.30
SINCE JAN 1 21.59 23.48 -1.89 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 5 7 -2 4
MONTH TO DATE 5 7 -2 4
SINCE SEP 1 138 109 29 55
SINCE JUL 1 163 164 -1 79
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 1 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 2.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 600 AM
LOWEST 62 800 PM
AVERAGE 76
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 80 2022
MINIMUM TEMPERATURE (F) 50 35 1950
SUNRISE AND SUNSET
OCTOBER 2 2026.......SUNRISE 710 AM PDT SUNSET 646 PM PDT
OCTOBER 3 2026.......SUNRISE 711 AM PDT SUNSET 644 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-020116:SEA:2026-10-01:interim · iem-afos · IEM archive
SHA-256 a252e4e35392ed0a07bdb1706cfe69726518de8dd2e286b77018240ec79507eb
Product text
CDUS46 KSEW 020116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT THU OCT 01 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 1 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 68 349 PM 89 1987 66 2 67
MINIMUM 51 445 AM 35 1950 51 0 54
AVERAGE 60 58 2 61
PRECIPITATION (IN)
TODAY 0.00 0.56 1981 0.08 -0.08 0.30
MONTH TO DATE 0.00 0.08 -0.08 0.30
SINCE OCT 1 0.00 0.08 -0.08 0.30
SINCE JAN 1 21.59 23.48 -1.89 16.57
SNOWFALL (IN)
TODAY MM MM MM 0.0
MONTH TO DATE MM 0.0
SINCE OCT 1 MM 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 5 7 -2 4
MONTH TO DATE 5 7 -2 4
SINCE SEP 1 138 109 29 55
SINCE JUL 1 163 164 -1 79
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 1 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 2.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 600 AM
LOWEST 80 1200 AM
AVERAGE 85
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 80 2022
MINIMUM TEMPERATURE (F) 50 35 1950
SUNRISE AND SUNSET
OCTOBER 1 2026.......SUNRISE 708 AM PDT SUNSET 648 PM PDT
OCTOBER 2 2026.......SUNRISE 710 AM PDT SUNSET 646 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/2026-10-01 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.