{"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":"2026-10-09","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":58,"tminF":50,"precipIn":0.01,"precipTrace":false,"tmax":14.44,"tmin":10,"precip":0.25,"issuedAt":"2026-10-10T08:29:00.000Z","productId":"iem:CDUS46-KSEW-100829:SEA:2026-10-09:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610100829"},"issues":[{"kind":"interim","asOfLocal":"0500 PM","issuedAt":"2026-10-10T01:17:00.000Z","issuedLocal":"617 PM PDT FRI OCT 09 2026","office":"KSEW","wmoHeader":"CDUS46 KSEW 100117","productId":"iem:CDUS46-KSEW-100117:SEA:2026-10-09:interim","source":"iem-afos","corrected":false,"tmaxF":58,"tmaxTimeLocal":"1241 PM","tminF":53,"tminTimeLocal":"304 PM","precipIn":0.01,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610100117","parseProblems":[],"rawTextSha256":"edabac327053b18e0c7e7126b2ed5dcb15c62a830598d57baca1e0cb375a9ebe","rawText":"CDUS46 KSEW 100117\nCLISEA\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE SEATTLE\n617 PM PDT FRI OCT 09 2026\n\n...................................\n\n...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 9 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 58 1241 PM 79 1996 63 -5 62 \n MINIMUM 53 304 PM 35 1960 49 4 51 \n AVERAGE 56 56 0 57 \n\nPRECIPITATION (IN) \n TODAY 0.01 1.27 1953 0.11 -0.10 0.04 \n MONTH TO DATE 0.01 0.83 -0.82 0.34 \n SINCE OCT 1 0.01 0.83 -0.82 0.34 \n SINCE JAN 1 21.60 24.23 -2.63 16.61 \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 9 9 0 8 \n MONTH TO DATE 48 72 -24 57 \n SINCE SEP 1 181 174 7 108 \n SINCE JUL 1 206 229 -23 132 \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 6 RESULTANT WIND DIRECTION S (180) \n HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50) \n HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190) \n AVERAGE WIND SPEED 12.9 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.8 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n LIGHT RAIN \n FOG \n HAZE \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 97 1200 AM \n LOWEST 66 400 PM \n AVERAGE 82 \n\n..........................................................\n\n\nTHE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 63 77 1987 \n MINIMUM TEMPERATURE (F) 48 34 1946 \n 2019 \n\n\nSUNRISE AND SUNSET \nOCTOBER 9 2026.......SUNRISE 720 AM PDT SUNSET 632 PM PDT \nOCTOBER 10 2026.......SUNRISE 721 AM PDT SUNSET 630 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":"2026-10-10T08:29:00.000Z","issuedLocal":"129 AM PDT SAT OCT 10 2026","office":"KSEW","wmoHeader":"CDUS46 KSEW 100829","productId":"iem:CDUS46-KSEW-100829:SEA:2026-10-09:final","source":"iem-afos","corrected":false,"tmaxF":58,"tmaxTimeLocal":"1241 PM","tminF":50,"tminTimeLocal":"1159 PM","precipIn":0.01,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLISEA&e=202610100829","parseProblems":[],"rawTextSha256":"0d0c549964fc944308441a4c9321df7b413d7c53610154712ef9781e7ea2a42b","rawText":"CDUS46 KSEW 100829\nCLISEA\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE SEATTLE\n129 AM PDT SAT OCT 10 2026\n\n...................................\n\n...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 9 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 58 1241 PM 79 1996 63 -5 62 \n MINIMUM 50 1159 PM 35 1960 49 1 51 \n AVERAGE 54 56 -2 57 \n\nPRECIPITATION (IN) \n YESTERDAY 0.01 1.27 1953 0.11 -0.10 0.04 \n MONTH TO DATE 0.01 0.83 -0.82 0.34 \n SINCE OCT 1 0.01 0.83 -0.82 0.34 \n SINCE JAN 1 21.60 24.23 -2.63 16.61 \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 11 9 2 8 \n MONTH TO DATE 50 72 -22 57 \n SINCE SEP 1 183 174 9 108 \n SINCE JUL 1 208 229 -21 132 \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 5 RESULTANT WIND DIRECTION SE (150) \n HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50) \n HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190) \n AVERAGE WIND SPEED 11.8 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.9 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n LIGHT RAIN \n FOG \n HAZE \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 97 1200 AM \n LOWEST 66 700 PM \n AVERAGE 82 \n\n..........................................................\n\n\nTHE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 63 77 1987 \n MINIMUM TEMPERATURE (F) 48 34 1946 \n 2019 \n\n\nSUNRISE AND SUNSET \nOCTOBER 10 2026.......SUNRISE 721 AM PDT SUNSET 630 PM PDT \nOCTOBER 11 2026.......SUNRISE 722 AM PDT SUNSET 629 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/2026-10-09","json":"https://weathermarket.io/api/nws-cli/KSEA/2026-10-09"},"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."}}