NWS CLI archive · settlement source
CLISEA · 시애틀 · America/Los_Angeles · ← 2026-10-25 · 2026-10-27 → · All dates for KSEA · JSON · METAR-derived record
Final issued 2026-10-27 04:27:00 EDT · Product id iem:CDUS46-KSEW-270827:SEA:2026-10-26:final · IEM archive
Product id iem:CDUS46-KSEW-270827:SEA:2026-10-26:final · iem-afos · IEM archive
SHA-256 7026995367193879a6057b307efbae1718700f0c757c08d24c5f91956d77af0e
Product text
CDUS46 KSEW 270827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT TUE OCT 27 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 26 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 58 154 PM 65 1998 57 1 50
MINIMUM 49 803 AM 29 1954 45 4 43
AVERAGE 54 51 3 47
PRECIPITATION (IN)
YESTERDAY 0.03 2.13 1986 0.16 -0.13 0.38
MONTH TO DATE 0.33 3.07 -2.74 2.80
SINCE OCT 1 0.33 3.07 -2.74 2.80
SINCE JAN 1 21.92 26.47 -4.55 19.07
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 14 -3 18
MONTH TO DATE 238 275 -37 273
SINCE SEP 1 371 377 -6 324
SINCE JUL 1 396 432 -36 348
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 E (80)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 3.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 AM
LOWEST 62 200 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 67 1968
MINIMUM TEMPERATURE (F) 45 31 1970
SUNRISE AND SUNSET
OCTOBER 27 2026.......SUNRISE 746 AM PDT SUNSET 600 PM PDT
OCTOBER 28 2026.......SUNRISE 747 AM PDT SUNSET 558 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-270120:SEA:2026-10-26:interim · iem-afos · IEM archive
SHA-256 8ab789b08065b799b19772f9264ac5c9504b70e10c9a2132f8f7a642833e84b4
Product text
CDUS46 KSEW 270120
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
620 PM PDT MON OCT 26 2026
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 26 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 58 154 PM 65 1998 57 1 50
MINIMUM 49 803 AM 29 1954 45 4 43
AVERAGE 54 51 3 47
PRECIPITATION (IN)
TODAY 0.03 2.13 1986 0.16 -0.13 0.38
MONTH TO DATE 0.33 3.07 -2.74 2.80
SINCE OCT 1 0.33 3.07 -2.74 2.80
SINCE JAN 1 21.92 26.47 -4.55 19.07
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 14 -3 18
MONTH TO DATE 238 275 -37 273
SINCE SEP 1 371 377 -6 324
SINCE JUL 1 396 432 -36 348
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 NE (50)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 3.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 AM
LOWEST 62 200 PM
AVERAGE 79
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 67 1968
MINIMUM TEMPERATURE (F) 45 31 1970
SUNRISE AND SUNSET
OCTOBER 26 2026.......SUNRISE 744 AM PDT SUNSET 601 PM PDT
OCTOBER 27 2026.......SUNRISE 746 AM PDT SUNSET 600 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/2026-10-26 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.