NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-09 · 2026-10-11 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-11 04:26:00 EDT · Product id iem:CDUS46-KSEW-110826:SEA:2026-10-10:final · IEM archive
Product id iem:CDUS46-KSEW-110826:SEA:2026-10-10:final · iem-afos · IEM archive
SHA-256 3832a07a98cf7ee754ac4806a36a680a2ebff0038eb41fd55dc5be8c9ada6d2b
Product text
CDUS46 KSEW 110826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SUN OCT 11 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 10 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 58 245 PM 77 1987 63 -5 61
MINIMUM 45 1127 PM 34 1946 48 -3 51
2019
AVERAGE 52 55 -3 56
PRECIPITATION (IN)
YESTERDAY 0.05 1.13 2015 0.10 -0.05 0.03
MONTH TO DATE 0.06 0.93 -0.87 0.37
SINCE OCT 1 0.06 0.93 -0.87 0.37
SINCE JAN 1 21.65 24.33 -2.68 16.64
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 13 10 3 9
MONTH TO DATE 63 82 -19 66
SINCE SEP 1 196 184 12 117
SINCE JUL 1 221 239 -18 141
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 NE (50)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 6.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 200 AM
LOWEST 55 400 PM
AVERAGE 72
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 83 1991
MINIMUM TEMPERATURE (F) 48 36 1946
SUNRISE AND SUNSET
OCTOBER 11 2026.......SUNRISE 722 AM PDT SUNSET 629 PM PDT
OCTOBER 12 2026.......SUNRISE 724 AM PDT SUNSET 627 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-110119:SEA:2026-10-10:interim · iem-afos · IEM archive
SHA-256 ed61a4dfb54f086ea9dcc659834acb1c7e18605f6cf9b642e94498359e22b76d
Product text
CDUS46 KSEW 110119
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
619 PM PDT SAT OCT 10 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 10 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 58 245 PM 77 1987 63 -5 61
MINIMUM 47 622 AM 34 1946 48 -1 51
2019
AVERAGE 53 55 -2 56
PRECIPITATION (IN)
TODAY T 1.13 2015 0.10 -0.10 0.03
MONTH TO DATE 0.01 0.93 -0.92 0.37
SINCE OCT 1 0.01 0.93 -0.92 0.37
SINCE JAN 1 21.60 24.33 -2.73 16.64
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 12 10 2 9
MONTH TO DATE 62 82 -20 66
SINCE SEP 1 195 184 11 117
SINCE JUL 1 220 239 -19 141
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 S (170)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 200 AM
LOWEST 55 400 PM
AVERAGE 72
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 83 1991
MINIMUM TEMPERATURE (F) 48 36 1946
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.
$$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/2026-10-10 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.