NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-08 · 2026-10-10 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-10 04:29:00 EDT · Product id iem:CDUS46-KSEW-100829:SEA:2026-10-09:final · IEM archive
Product id iem:CDUS46-KSEW-100829:SEA:2026-10-09:final · iem-afos · IEM archive
SHA-256 0d0c549964fc944308441a4c9321df7b413d7c53610154712ef9781e7ea2a42b
Product text
CDUS46 KSEW 100829
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
129 AM PDT SAT OCT 10 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 9 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 58 1241 PM 79 1996 63 -5 62
MINIMUM 50 1159 PM 35 1960 49 1 51
AVERAGE 54 56 -2 57
PRECIPITATION (IN)
YESTERDAY 0.01 1.27 1953 0.11 -0.10 0.04
MONTH TO DATE 0.01 0.83 -0.82 0.34
SINCE OCT 1 0.01 0.83 -0.82 0.34
SINCE JAN 1 21.60 24.23 -2.63 16.61
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 11 9 2 8
MONTH TO DATE 50 72 -22 57
SINCE SEP 1 183 174 9 108
SINCE JUL 1 208 229 -21 132
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 5 RESULTANT WIND DIRECTION SE (150)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 11.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 66 700 PM
AVERAGE 82
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 77 1987
MINIMUM TEMPERATURE (F) 48 34 1946
2019
SUNRISE AND SUNSET
OCTOBER 10 2026.......SUNRISE 721 AM PDT SUNSET 630 PM PDT
OCTOBER 11 2026.......SUNRISE 722 AM PDT SUNSET 629 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-100117:SEA:2026-10-09:interim · iem-afos · IEM archive
SHA-256 edabac327053b18e0c7e7126b2ed5dcb15c62a830598d57baca1e0cb375a9ebe
Product text
CDUS46 KSEW 100117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT FRI OCT 09 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 9 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 58 1241 PM 79 1996 63 -5 62
MINIMUM 53 304 PM 35 1960 49 4 51
AVERAGE 56 56 0 57
PRECIPITATION (IN)
TODAY 0.01 1.27 1953 0.11 -0.10 0.04
MONTH TO DATE 0.01 0.83 -0.82 0.34
SINCE OCT 1 0.01 0.83 -0.82 0.34
SINCE JAN 1 21.60 24.23 -2.63 16.61
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 9 9 0 8
MONTH TO DATE 48 72 -24 57
SINCE SEP 1 181 174 7 108
SINCE JUL 1 206 229 -23 132
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 S (180)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 12.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 66 400 PM
AVERAGE 82
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 77 1987
MINIMUM TEMPERATURE (F) 48 34 1946
2019
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.
$$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/2026-10-09 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.