{"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":"2026-09-17","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":76,"tminF":64,"precipIn":0,"precipTrace":true,"tmax":24.44,"tmin":17.78,"precip":0,"issuedAt":"2026-09-18T06:56:00.000Z","productId":"iem:CDUS41-KBOX-180656:BOS:2026-09-17:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609180656"},"issues":[{"kind":"interim","asOfLocal":"0500 PM","issuedAt":"2026-09-17T21:41:00.000Z","issuedLocal":"541 PM EDT THU SEP 17 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 172141","productId":"iem:CDUS41-KBOX-172141:BOS:2026-09-17:interim","source":"iem-afos","corrected":false,"tmaxF":75,"tmaxTimeLocal":"1006 AM","tminF":64,"tminTimeLocal":"554 AM","precipIn":0,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609172141","parseProblems":[],"rawTextSha256":"a254903fe4ef7a230b2d9166e13e5742d8a491b6f1c09ee8a55b099a0394ead0","rawText":"CDUS41 KBOX 172141\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n541 PM EDT THU SEP 17 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 17 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 75 1006 AM 91 1915 73 2 70 \n MINIMUM 64 554 AM 44 2013 58 6 56 \n AVERAGE 70 65 5 63 \n\nPRECIPITATION (IN) \n TODAY 0.00 2.77 1995 0.13 -0.13 0.01 \n MONTH TO DATE 1.70 1.90 -0.20 1.44 \n SINCE SEP 1 1.70 1.90 -0.20 1.44 \n SINCE JAN 1 19.26 29.94 -10.68 26.39 \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 2 \n MONTH TO DATE 7 20 -13 18 \n SINCE SEP 1 7 20 -13 18 \n SINCE JUL 1 7 29 -22 25 \n\n COOLING \n TODAY 5 3 2 0 \n MONTH TO DATE 71 70 1 35 \n SINCE SEP 1 71 70 1 35 \n SINCE JAN 1 988 770 218 792 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (100) \n HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (100) \n AVERAGE WIND SPEED 4.1 \n\n\nSKY COVER \n POSSIBLE SUNSHINE MM \n AVERAGE SKY COVER 0.7 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n NO SIGNIFICANT WEATHER WAS OBSERVED. \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 96 600 AM \n LOWEST 71 1000 AM \n AVERAGE 84 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 72 90 1891 \n 1906 \n 1955 \n MINIMUM TEMPERATURE (F) 58 43 1875 \n\n\nSUNRISE AND SUNSET \nSEPTEMBER 17 2026.....SUNRISE 626 AM EDT SUNSET 650 PM EDT \nSEPTEMBER 18 2026.....SUNRISE 627 AM EDT SUNSET 648 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":"2026-09-18T06:56:00.000Z","issuedLocal":"256 AM EDT FRI SEP 18 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 180656","productId":"iem:CDUS41-KBOX-180656:BOS:2026-09-17:final","source":"iem-afos","corrected":false,"tmaxF":76,"tmaxTimeLocal":"456 PM","tminF":64,"tminTimeLocal":"554 AM","precipIn":0,"precipTrace":true,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609180656","parseProblems":[],"rawTextSha256":"59e516539567cef7452f9d3410316beb5ef9a9b999285d0eb2db539f5262242a","rawText":"CDUS41 KBOX 180656\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n256 AM EDT FRI SEP 18 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 17 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 76 456 PM 91 1915 73 3 70 \n MINIMUM 64 554 AM 44 2013 58 6 56 \n AVERAGE 70 65 5 63 \n\nPRECIPITATION (IN) \n YESTERDAY T 2.77 1995 0.13 -0.13 0.01 \n MONTH TO DATE 1.70 1.90 -0.20 1.44 \n SINCE SEP 1 1.70 1.90 -0.20 1.44 \n SINCE JAN 1 19.26 29.94 -10.68 26.39 \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 2 \n MONTH TO DATE 7 20 -13 18 \n SINCE SEP 1 7 20 -13 18 \n SINCE JUL 1 7 29 -22 25 \n\n COOLING \n YESTERDAY 5 3 2 0 \n MONTH TO DATE 71 70 1 35 \n SINCE SEP 1 71 70 1 35 \n SINCE JAN 1 988 770 218 792 \n...................................................................\n\n\nWIND (MPH) \n RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (180) \n HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230) \n HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (230) \n AVERAGE WIND SPEED 7.1 \n\n\nSKY COVER \n POSSIBLE SUNSHINE MM \n AVERAGE SKY COVER 0.8 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n LIGHT RAIN \n FOG \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 96 600 AM \n LOWEST 71 1000 AM \n AVERAGE 84 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 72 90 1891 \n 1906 \n 1955 \n MINIMUM TEMPERATURE (F) 58 43 1875 \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$$"}],"html":"https://weathermarket.io/nws-cli/KBOS/2026-09-17","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-09-17"},"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."}}