NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-11 · 2026-10-13 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-13 04:26:00 EDT · Product id iem:CDUS46-KSEW-130826:SEA:2026-10-12:final · IEM archive
Product id iem:CDUS46-KSEW-130826:SEA:2026-10-12:final · iem-afos · IEM archive
SHA-256 3508234ec43ac61939181041ee06a01c443654db3a22c98443ff54a4fab0f87d
Product text
CDUS46 KSEW 130826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT TUE OCT 13 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 12 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 61 401 PM 72 2006 62 -1 56
MINIMUM 41 448 AM 36 2021 48 -7 43
AVERAGE 51 55 -4 50
PRECIPITATION (IN)
YESTERDAY 0.00 0.70 1998 0.11 -0.11 0.19
MONTH TO DATE 0.06 1.15 -1.09 0.60
SINCE OCT 1 0.06 1.15 -1.09 0.60
SINCE JAN 1 21.65 24.55 -2.90 16.87
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 14 10 4 15
MONTH TO DATE 90 102 -12 92
SINCE SEP 1 223 204 19 143
SINCE JUL 1 248 259 -11 167
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 3 RESULTANT WIND DIRECTION SE (120)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 300 AM
LOWEST 39 200 PM
AVERAGE 64
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 75 1961
2022
MINIMUM TEMPERATURE (F) 48 35 1954
SUNRISE AND SUNSET
OCTOBER 13 2026.......SUNRISE 725 AM PDT SUNSET 625 PM PDT
OCTOBER 14 2026.......SUNRISE 727 AM PDT SUNSET 623 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-130117:SEA:2026-10-12:interim · iem-afos · IEM archive
SHA-256 8150a0e235379256c880f02ceda027452c804227f1552a79896bf19c6669b3f9
Product text
CDUS46 KSEW 130117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT MON OCT 12 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 12 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 61 401 PM 72 2006 62 -1 56
MINIMUM 41 448 AM 36 2021 48 -7 43
AVERAGE 51 55 -4 50
PRECIPITATION (IN)
TODAY 0.00 0.70 1998 0.11 -0.11 0.19
MONTH TO DATE 0.06 1.15 -1.09 0.60
SINCE OCT 1 0.06 1.15 -1.09 0.60
SINCE JAN 1 21.65 24.55 -2.90 16.87
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 14 10 4 15
MONTH TO DATE 90 102 -12 92
SINCE SEP 1 223 204 19 143
SINCE JUL 1 248 259 -11 167
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 2 RESULTANT WIND DIRECTION SE (120)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 4.2
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 300 AM
LOWEST 39 200 PM
AVERAGE 64
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 75 1961
2022
MINIMUM TEMPERATURE (F) 48 35 1954
SUNRISE AND SUNSET
OCTOBER 12 2026.......SUNRISE 724 AM PDT SUNSET 627 PM PDT
OCTOBER 13 2026.......SUNRISE 725 AM PDT SUNSET 625 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/2026-10-12 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.