NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-07 · 2026-10-09 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-09 04:27:00 EDT · Product id iem:CDUS46-KSEW-090827:SEA:2026-10-08:final · IEM archive
Product id iem:CDUS46-KSEW-090827:SEA:2026-10-08:final · iem-afos · IEM archive
SHA-256 4f9bbad6e0ee99dc0250302ecc00ea1deb6aac827102963bc0d3092157a3753a
Product text
CDUS46 KSEW 090827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT FRI OCT 09 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 8 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 67 417 PM 80 1951 63 4 61
MINIMUM 51 636 AM 39 1949 49 2 48
1961
AVERAGE 59 56 3 55
PRECIPITATION (IN)
YESTERDAY 0.00 1.16 1962 0.10 -0.10 T
MONTH TO DATE 0.00 0.72 -0.72 0.30
SINCE OCT 1 0.00 0.72 -0.72 0.30
SINCE JAN 1 21.59 24.12 -2.53 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 6 9 -3 10
MONTH TO DATE 39 63 -24 49
SINCE SEP 1 172 165 7 100
SINCE JUL 1 197 220 -23 124
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 (10)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 2.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 63 600 PM
AVERAGE 82
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 79 1996
MINIMUM TEMPERATURE (F) 49 35 1960
SUNRISE AND SUNSET
OCTOBER 9 2026.......SUNRISE 720 AM PDT SUNSET 632 PM PDT
OCTOBER 10 2026.......SUNRISE 721 AM PDT SUNSET 630 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-090116:SEA:2026-10-08:interim · iem-afos · IEM archive
SHA-256 e068efbb2a4cb9419f8ecc3f9bf66b1c005e6fffefbaea4abc391d51474fcc5a
Product text
CDUS46 KSEW 090116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT THU OCT 08 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 8 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 67 417 PM 80 1951 63 4 61
MINIMUM 51 636 AM 39 1949 49 2 48
1961
AVERAGE 59 56 3 55
PRECIPITATION (IN)
TODAY 0.00 1.16 1962 0.10 -0.10 T
MONTH TO DATE 0.00 0.72 -0.72 0.30
SINCE OCT 1 0.00 0.72 -0.72 0.30
SINCE JAN 1 21.59 24.12 -2.53 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 6 9 -3 10
MONTH TO DATE 39 63 -24 49
SINCE SEP 1 172 165 7 100
SINCE JUL 1 197 220 -23 124
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 NW (320)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 2.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 63 300 PM
AVERAGE 82
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 79 1996
MINIMUM TEMPERATURE (F) 49 35 1960
SUNRISE AND SUNSET
OCTOBER 8 2026.......SUNRISE 718 AM PDT SUNSET 634 PM PDT
OCTOBER 9 2026.......SUNRISE 720 AM PDT SUNSET 632 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/2026-10-08 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.