NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-18 · 2026-10-20 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-20 04:26:00 EDT · Product id iem:CDUS46-KSEW-200826:SEA:2026-10-19:final · IEM archive
Product id iem:CDUS46-KSEW-200826:SEA:2026-10-19:final · iem-afos · IEM archive
SHA-256 f51b0ecd3da36a04615202d345bdec8f16bb3a0fa6722dd0e2fbf8934d22abe4
Product text
CDUS46 KSEW 200826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT TUE OCT 20 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 19 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 62 357 PM 72 2014 59 3 59
MINIMUM 46 713 AM 28 1949 46 0 50
AVERAGE 54 53 1 55
PRECIPITATION (IN)
YESTERDAY 0.00 1.05 1958 0.13 -0.13 0.06
MONTH TO DATE 0.08 2.01 -1.93 1.03
SINCE OCT 1 0.08 2.01 -1.93 1.03
SINCE JAN 1 21.67 25.41 -3.74 17.30
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 12 -1 10
MONTH TO DATE 149 181 -32 185
SINCE SEP 1 282 283 -1 236
SINCE JUL 1 307 338 -31 260
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 4 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 800 AM
LOWEST 52 300 PM
AVERAGE 71
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 69 1987
MINIMUM TEMPERATURE (F) 46 29 1949
SUNRISE AND SUNSET
OCTOBER 20 2026.......SUNRISE 735 AM PDT SUNSET 612 PM PDT
OCTOBER 21 2026.......SUNRISE 737 AM PDT SUNSET 610 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-200116:SEA:2026-10-19:interim · iem-afos · IEM archive
SHA-256 36509765bdf2fdeed2352d0a4974a0564a695dc535ae032a30e76b28ac9377f9
Product text
CDUS46 KSEW 200116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT MON OCT 19 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 19 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 62 357 PM 72 2014 59 3 59
MINIMUM 46 713 AM 28 1949 46 0 50
AVERAGE 54 53 1 55
PRECIPITATION (IN)
TODAY 0.00 1.05 1958 0.13 -0.13 0.06
MONTH TO DATE 0.08 2.01 -1.93 1.03
SINCE OCT 1 0.08 2.01 -1.93 1.03
SINCE JAN 1 21.67 25.41 -3.74 17.30
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 11 12 -1 10
MONTH TO DATE 149 181 -32 185
SINCE SEP 1 282 283 -1 236
SINCE JUL 1 307 338 -31 260
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 (10)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 3.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 800 AM
LOWEST 52 300 PM
AVERAGE 71
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 69 1987
MINIMUM TEMPERATURE (F) 46 29 1949
SUNRISE AND SUNSET
OCTOBER 19 2026.......SUNRISE 734 AM PDT SUNSET 614 PM PDT
OCTOBER 20 2026.......SUNRISE 735 AM PDT SUNSET 612 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/2026-10-19 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.