{"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":"2026-09-09","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":76,"tminF":61,"precipIn":0.02,"precipTrace":false,"tmax":24.44,"tmin":16.11,"precip":0.51,"issuedAt":"2026-09-10T05:29:00.000Z","productId":"iem:CDUS41-KBOX-100529:BOS:2026-09-09:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609100529"},"issues":[{"kind":"interim","asOfLocal":"0500 PM","issuedAt":"2026-09-09T21:51:00.000Z","issuedLocal":"551 PM EDT WED SEP 09 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 092151","productId":"iem:CDUS41-KBOX-092151:BOS:2026-09-09:interim","source":"iem-afos","corrected":false,"tmaxF":76,"tmaxTimeLocal":"346 PM","tminF":61,"tminTimeLocal":"720 AM","precipIn":0,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609092151","parseProblems":[],"rawTextSha256":"b29ec45c182896cf2ad45bfe8dc73d7e810af7db3fec7adff8b8366c406f8536","rawText":"CDUS41 KBOX 092151\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n551 PM EDT WED SEP 09 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 9 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 76 346 PM 93 2015 76 0 69 \n 2016 \n MINIMUM 61 720 AM 45 1938 61 0 53 \n AVERAGE 69 68 1 61 \n\nPRECIPITATION (IN) \n TODAY 0.00 2.19 1969 0.11 -0.11 0.00 \n MONTH TO DATE 0.83 0.95 -0.12 1.43 \n SINCE SEP 1 0.83 0.95 -0.12 1.43 \n SINCE JAN 1 18.39 28.99 -10.60 26.38 \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 1 -1 4 \n MONTH TO DATE 1 7 -6 8 \n SINCE SEP 1 1 7 -6 8 \n SINCE JUL 1 1 16 -15 15 \n\n COOLING \n TODAY 4 4 0 0 \n MONTH TO DATE 40 44 -4 32 \n SINCE SEP 1 40 44 -4 32 \n SINCE JAN 1 957 744 213 789 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (190) \n HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180) \n AVERAGE WIND SPEED 6.5 \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 HAZE \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 84 200 PM \n LOWEST 69 400 PM \n AVERAGE 77 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 75 95 1931 \n MINIMUM TEMPERATURE (F) 60 41 1883 \n\n\nSUNRISE AND SUNSET \nSEPTEMBER 9 2026.....SUNRISE 618 AM EDT SUNSET 704 PM EDT \nSEPTEMBER 10 2026.....SUNRISE 619 AM EDT SUNSET 703 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":"2026-09-10T05:29:00.000Z","issuedLocal":"129 AM EDT THU SEP 10 2026","office":"KBOX","wmoHeader":"CDUS41 KBOX 100529","productId":"iem:CDUS41-KBOX-100529:BOS:2026-09-09:final","source":"iem-afos","corrected":false,"tmaxF":76,"tmaxTimeLocal":"441 PM","tminF":61,"tminTimeLocal":"720 AM","precipIn":0.02,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIBOS&e=202609100529","parseProblems":[],"rawTextSha256":"9e1644f8046812a13cfd81b4b9ab78f07de08b91175de56e0cbc164d19de853a","rawText":"CDUS41 KBOX 100529\nCLIBOS\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BOSTON/NORTON MA\n129 AM EDT THU SEP 10 2026\n\n...................................\n\n...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 9 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 76 441 PM 93 2015 76 0 69 \n 2016 \n MINIMUM 61 720 AM 45 1938 61 0 53 \n AVERAGE 69 68 1 61 \n\nPRECIPITATION (IN) \n YESTERDAY 0.02 2.19 1969 0.11 -0.09 0.00 \n MONTH TO DATE 0.85 0.95 -0.10 1.43 \n SINCE SEP 1 0.85 0.95 -0.10 1.43 \n SINCE JAN 1 18.41 28.99 -10.58 26.38 \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 1 -1 4 \n MONTH TO DATE 1 7 -6 8 \n SINCE SEP 1 1 7 -6 8 \n SINCE JUL 1 1 16 -15 15 \n\n COOLING \n YESTERDAY 4 4 0 0 \n MONTH TO DATE 40 44 -4 32 \n SINCE SEP 1 40 44 -4 32 \n SINCE JAN 1 957 744 213 789 \n...................................................................\n\n\nWIND (MPH) \n RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (190) \n HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (210) \n HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (220) \n AVERAGE WIND SPEED 9.9 \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 HAZE \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 90 700 PM \n LOWEST 69 400 PM \n AVERAGE 80 \n\n..........................................................\n\n\nTHE BOSTON MA CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 75 95 1931 \n MINIMUM TEMPERATURE (F) 60 41 1883 \n\n\nSUNRISE AND SUNSET \nSEPTEMBER 10 2026.....SUNRISE 619 AM EDT SUNSET 703 PM EDT \nSEPTEMBER 11 2026.....SUNRISE 620 AM EDT SUNSET 701 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/2026-09-09","json":"https://weathermarket.io/api/nws-cli/KBOS/2026-09-09"},"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/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."}}