{"station":{"icao":"KBOS","cliId":"BOS","pil":"CLIBOS","city":{"slug":"boston","name":"보스턴","country":"United States"},"timezone":"America/New_York","feed":"https://api.weather.gov/products/types/CLI/locations/BOS","html":"https://weathermarket.io/nws-cli/KBOS","json":"https://weathermarket.io/api/nws-cli/KBOS"},"stationToday":"2026-11-14","day":{"date":"2026-09-18","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":80,"tminF":62,"precipIn":0,"precipTrace":true,"tmax":26.67,"tmin":16.67,"precip":0,"issuedAt":"2026-09-19T05:39:00.000Z","productId":"iem:CDUS41-KBOX-190539:BOS:2026-09-18:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609190539"},"issues":[{"kind":"interim","asOfLocal":"0500 PM","issuedAt":"2026-09-18T21:28:00.000Z","issuedLocal":"528 PM EDT FRI SEP 18 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 182128","productId":"iem:CDUS41-KBOX-182128:BOS:2026-09-18:interim","source":"iem-afos","corrected":false,"tmaxF":80,"tmaxTimeLocal":"158 PM","tminF":66,"tminTimeLocal":"546 AM","precipIn":0,"precipTrace":true,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609182128","parseProblems":[],"rawTextSha256":"ccd716be927992de553928ff8ab52471218beb61e29850efbc2c249926a815dd","rawText":"CDUS41 KBOX 182128\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n528 PM EDT FRI SEP 18 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 18 2026...\nVALID TODAY AS OF 0500 PM LOCAL TIME.\n\nCLIMATE NORMAL PERIOD 1991 TO 2020\nCLIMATE RECORD PERIOD 1872 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 80 158 PM 90 1891 72 8 74 \n 1906 \n 1955 \n MINIMUM 66 546 AM 43 1875 58 8 62 \n AVERAGE 73 65 8 68 \n\nPRECIPITATION (IN) \n TODAY T 2.87 2004 0.13 -0.13 0.11 \n MONTH TO DATE 1.70 2.03 -0.33 1.55 \n SINCE SEP 1 1.70 2.03 -0.33 1.55 \n SINCE JAN 1 19.26 30.07 -10.81 26.50 \n\nSNOWFALL (IN) \n TODAY 0.0 0.0 2000 0.0 0.0 0.0 \n 2001 \n 2002 \n MONTH TO DATE 0.0 0.0 0.0 0.0 \n SINCE SEP 1 0.0 0.0 0.0 0.0 \n SINCE JUL 1 0.0 0.0 0.0 0.0 \n\nDEGREE DAYS \n HEATING \n TODAY 0 2 -2 0 \n MONTH TO DATE 7 22 -15 18 \n SINCE SEP 1 7 22 -15 18 \n SINCE JUL 1 7 31 -24 25 \n\n COOLING \n TODAY 8 2 6 3 \n MONTH TO DATE 79 72 7 38 \n SINCE SEP 1 79 72 7 38 \n SINCE JAN 1 996 772 224 795 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (310) \n HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (340) \n AVERAGE WIND SPEED 10.0 \n\n\nSKY COVER \n POSSIBLE SUNSHINE MM \n AVERAGE SKY COVER 0.6 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n LIGHT RAIN \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 93 200 AM \n LOWEST 40 100 PM \n AVERAGE 67 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 72 92 1983 \n MINIMUM TEMPERATURE (F) 57 42 1929 \n\n\nSUNRISE AND SUNSET \nSEPTEMBER 18 2026.....SUNRISE 627 AM EDT SUNSET 648 PM EDT \nSEPTEMBER 19 2026.....SUNRISE 628 AM EDT SUNSET 647 PM EDT \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":"2026-09-19T05:39:00.000Z","issuedLocal":"139 AM EDT SAT SEP 19 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 190539","productId":"iem:CDUS41-KBOX-190539:BOS:2026-09-18:final","source":"iem-afos","corrected":false,"tmaxF":80,"tmaxTimeLocal":"158 PM","tminF":62,"tminTimeLocal":"1159 PM","precipIn":0,"precipTrace":true,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609190539","parseProblems":[],"rawTextSha256":"ecdd5a5ef660232f7b8f3587439ba2010ab040c4cb9cdc2d8e512ac801941289","rawText":"CDUS41 KBOX 190539\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n139 AM EDT SAT SEP 19 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 18 2026...\n\nCLIMATE NORMAL PERIOD 1991 TO 2020\nCLIMATE RECORD PERIOD 1872 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 80 158 PM 90 1891 72 8 74 \n 1906 \n 1955 \n MINIMUM 62 1159 PM 43 1875 58 4 62 \n AVERAGE 71 65 6 68 \n\nPRECIPITATION (IN) \n YESTERDAY T 2.87 2004 0.13 -0.13 0.11 \n MONTH TO DATE 1.70 2.03 -0.33 1.55 \n SINCE SEP 1 1.70 2.03 -0.33 1.55 \n SINCE JAN 1 19.26 30.07 -10.81 26.50 \n\nSNOWFALL (IN) \n YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0 \n 2001 \n 2002 \n MONTH TO DATE 0.0 0.0 0.0 0.0 \n SINCE SEP 1 0.0 0.0 0.0 0.0 \n SINCE JUL 1 0.0 0.0 0.0 0.0 \n\nDEGREE DAYS \n HEATING \n YESTERDAY 0 2 -2 0 \n MONTH TO DATE 7 22 -15 18 \n SINCE SEP 1 7 22 -15 18 \n SINCE JUL 1 7 31 -24 25 \n\n COOLING \n YESTERDAY 6 2 4 3 \n MONTH TO DATE 77 72 5 38 \n SINCE SEP 1 77 72 5 38 \n SINCE JAN 1 994 772 222 795 \n...................................................................\n\n\nWIND (MPH) \n RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NW (320) \n HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (340) \n HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (340) \n AVERAGE WIND SPEED 10.9 \n\n\nSKY COVER \n POSSIBLE SUNSHINE MM \n AVERAGE SKY COVER 0.5 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n LIGHT RAIN \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 93 200 AM \n LOWEST 37 500 PM \n AVERAGE 65 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 72 92 1983 \n MINIMUM TEMPERATURE (F) 57 42 1929 \n\n\nSUNRISE AND SUNSET \nSEPTEMBER 19 2026.....SUNRISE 628 AM EDT SUNSET 647 PM EDT \nSEPTEMBER 20 2026.....SUNRISE 629 AM EDT SUNSET 645 PM EDT \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/KBOS/2026-09-18","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-09-18"},"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/KBOS/YYYY-MM-DD (HTML) and https://weathermarket.io/api/nws-cli/KBOS/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the final NWS Climatological Report (CLI) for station KBOS for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KBOS/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."}}