{"station":{"icao":"KSEA","cliId":"SEA","pil":"CLISEA","city":{"slug":"seattle","name":"시애틀","country":"United States"},"timezone":"America/Los_Angeles","feed":"https://api.weather.gov/products/types/CLI/locations/SEA","html":"https://weathermarket.io/nws-cli/KSEA","json":"https://weathermarket.io/api/nws-cli/KSEA"},"stationToday":"2026-11-13","day":{"date":"2026-10-28","status":"issued","note":"Final CLI issued - values.nwsOfficial carries the official daily values (metric here; official.issued.asReported keeps the °F / inch / mph exactly as printed).","settlement":{"tmaxF":54,"tminF":44,"precipIn":0.15,"precipTrace":false,"tmax":12.22,"tmin":6.67,"precip":3.81,"issuedAt":"2026-10-29T08:33:00.000Z","productId":"iem:CDUS46-KSEW-290833:SEA:2026-10-28:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610290833"},"issues":[{"kind":"interim","asOfLocal":"0500 PM","issuedAt":"2026-10-29T01:16:00.000Z","issuedLocal":"616 PM PDT WED OCT 28 2026","office":"KSEW","wmoHeader":"CDUS46 KSEW 290116","productId":"iem:CDUS46-KSEW-290116:SEA:2026-10-28:interim","source":"iem-afos","corrected":false,"tmaxF":54,"tmaxTimeLocal":"256 PM","tminF":47,"tminTimeLocal":"838 AM","precipIn":0.1,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610290116","parseProblems":[],"rawTextSha256":"a85c8ce7f5d02a7147f9692f6038ccdca0536323f2ee81c3588efeff83d1a786","rawText":"CDUS46 KSEW 290116\nCLISEA\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE SEATTLE\n616 PM PDT WED OCT 28 2026\n\n...................................\n\n...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 28 2026...\nVALID TODAY AS OF 0500 PM LOCAL TIME.\n\nCLIMATE NORMAL PERIOD 1991 TO 2020\nCLIMATE RECORD PERIOD 1945 TO 2026\n\n\nWEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST \n VALUE (LST) VALUE VALUE FROM YEAR \n NORMAL \n...................................................................\nTEMPERATURE (F) \n TODAY \n MAXIMUM 54 256 PM 68 2017 56 -2 56 \n MINIMUM 47 838 AM 29 1946 44 3 38 \n AVERAGE 51 50 1 47 \n\nPRECIPITATION (IN) \n TODAY 0.10 1.99 2021 0.17 -0.07 0.28 \n MONTH TO DATE 0.62 3.40 -2.78 3.09 \n SINCE OCT 1 0.62 3.40 -2.78 3.09 \n SINCE JAN 1 22.21 26.80 -4.59 19.36 \n\nSNOWFALL (IN) \n TODAY 0.0 MM MM 0.0 \n MONTH TO DATE 0.0 0.0 \n SINCE OCT 1 0.0 0.0 \n SINCE JUL 1 0.0 0.0 \n SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n TODAY 14 15 -1 18 \n MONTH TO DATE 265 304 -39 308 \n SINCE SEP 1 398 406 -8 359 \n SINCE JUL 1 423 461 -38 383 \n\n COOLING \n TODAY 0 0 0 0 \n MONTH TO DATE 0 0 0 0 \n SINCE SEP 1 2 30 -28 34 \n SINCE JAN 1 267 263 4 328 \n...................................................................\n\n\nWIND (MPH) \n RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION S (200) \n HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (170) \n HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (170) \n AVERAGE WIND SPEED 12.7 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.7 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n RAIN \n FOG \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 93 1200 AM \n LOWEST 64 300 PM \n AVERAGE 79 \n\n..........................................................\n\n\nTHE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 56 65 1986 \n 1987 \n MINIMUM TEMPERATURE (F) 44 31 1970 \n 1971 \n\n\nSUNRISE AND SUNSET \nOCTOBER 28 2026.......SUNRISE 747 AM PDT SUNSET 558 PM PDT \nOCTOBER 29 2026.......SUNRISE 749 AM PDT SUNSET 556 PM PDT \n\n\n- INDICATES NEGATIVE NUMBERS.\nR INDICATES RECORD WAS SET OR TIED.\nMM INDICATES DATA IS MISSING.\nT INDICATES TRACE AMOUNT.\n\n\n\n\n$$"},{"kind":"final","asOfLocal":null,"issuedAt":"2026-10-29T08:33:00.000Z","issuedLocal":"133 AM PDT THU OCT 29 2026","office":"KSEW","wmoHeader":"CDUS46 KSEW 290833","productId":"iem:CDUS46-KSEW-290833:SEA:2026-10-28:final","source":"iem-afos","corrected":false,"tmaxF":54,"tmaxTimeLocal":"256 PM","tminF":44,"tminTimeLocal":"1159 PM","precipIn":0.15,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610290833","parseProblems":[],"rawTextSha256":"effd1aae57575eb80f515d92f0be3ecb15562683c7d8326967fccbe80a5a088a","rawText":"CDUS46 KSEW 290833\nCLISEA\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE SEATTLE\n133 AM PDT THU OCT 29 2026\n\n...................................\n\n...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 28 2026...\n\nCLIMATE NORMAL PERIOD 1991 TO 2020\nCLIMATE RECORD PERIOD 1945 TO 2026\n\n\nWEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST \n VALUE (LST) VALUE VALUE FROM YEAR \n NORMAL \n...................................................................\nTEMPERATURE (F) \n YESTERDAY \n MAXIMUM 54 256 PM 68 2017 56 -2 56 \n MINIMUM 44 1159 PM 29 1946 44 0 38 \n AVERAGE 49 50 -1 47 \n\nPRECIPITATION (IN) \n YESTERDAY 0.15 1.99 2021 0.17 -0.02 0.28 \n MONTH TO DATE 0.67 3.40 -2.73 3.09 \n SINCE OCT 1 0.67 3.40 -2.73 3.09 \n SINCE JAN 1 22.26 26.80 -4.54 19.36 \n\nSNOWFALL (IN) \n YESTERDAY 0.0 MM MM 0.0 \n MONTH TO DATE 0.0 0.0 \n SINCE OCT 1 0.0 0.0 \n SINCE JUL 1 0.0 0.0 \n SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n YESTERDAY 16 15 1 18 \n MONTH TO DATE 267 304 -37 308 \n SINCE SEP 1 400 406 -6 359 \n SINCE JUL 1 425 461 -36 383 \n\n COOLING \n YESTERDAY 0 0 0 0 \n MONTH TO DATE 0 0 0 0 \n SINCE SEP 1 2 30 -28 34 \n SINCE JAN 1 267 263 4 328 \n...................................................................\n\n\nWIND (MPH) \n RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION S (190) \n HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (170) \n HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (170) \n AVERAGE WIND SPEED 11.8 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.7 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n RAIN \n FOG \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 93 1200 AM \n LOWEST 64 300 PM \n AVERAGE 79 \n\n..........................................................\n\n\nTHE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 56 65 1986 \n 1987 \n MINIMUM TEMPERATURE (F) 44 31 1970 \n 1971 \n\n\nSUNRISE AND SUNSET \nOCTOBER 29 2026.......SUNRISE 749 AM PDT SUNSET 556 PM PDT \nOCTOBER 30 2026.......SUNRISE 750 AM PDT SUNSET 555 PM PDT \n\n\n- INDICATES NEGATIVE NUMBERS.\nR INDICATES RECORD WAS SET OR TIED.\nMM INDICATES DATA IS MISSING.\nT INDICATES TRACE AMOUNT.\n\n\n\n\n$$"}],"html":"https://weathermarket.io/nws-cli/KSEA/2026-10-28","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-10-28"},"about":{"product":"NWS Climatological Report (CLI): the daily climate summary issued by the local NWS forecast office from the station's 1-minute ASOS record, normally 1-3 hours after local midnight (final, 'YESTERDAY') and once during the day (interim, 'TODAY AS OF'). Corrections are re-issued under the same PIL with CORRECTED in the text.","settlementRule":"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.","archive":"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.","verify":["Each issue carries the NWS product id (api.weather.gov keeps products for a limited time) and a link to the IEM AFOS permanent archive of the same product.","rawTextSha256 is the SHA-256 of the stored product text; compare it with the text at either link to confirm nothing was altered.","Permalink pattern for market rules: https://weathermarket.io/nws-cli/KSEA/YYYY-MM-DD (HTML) and https://weathermarket.io/api/nws-cli/KSEA/YYYY-MM-DD (JSON)."],"citation":"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/YYYY-MM-DD with links to the NWS product and the IEM archive. A CORRECTED re-issue published before the settlement time supersedes earlier issues."}}