{"station":{"icao":"KIAD","cliId":"IAD","pil":"CLIIAD","city":{"slug":"washington","name":"워싱턴 D.C.","country":"United States"},"timezone":"America/New_York","feed":"https://api.weather.gov/products/types/CLI/locations/IAD","html":"https://weathermarket.io/nws-cli/KIAD","json":"https://weathermarket.io/api/nws-cli/KIAD"},"stationToday":"2026-11-13","day":{"date":"2026-11-04","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":77,"tminF":50,"precipIn":0,"precipTrace":true,"tmax":25,"tmin":10,"precip":0,"issuedAt":"2026-11-05T07:23:00.000Z","productId":"f04fe37b-d399-47af-af35-07f192a96983","corrected":false,"reissues":0,"nwsProductUrl":"https://api.weather.gov/products/f04fe37b-d399-47af-af35-07f192a96983","iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIIAD&e=202611050723"},"issues":[{"kind":"interim","asOfLocal":"0400 PM","issuedAt":"2026-11-04T21:35:00.000Z","issuedLocal":"435 PM EST WED NOV 04 2026","office":"KLWX","wmoHeader":"CDUS41 KLWX 042135","productId":"5a632da5-eb34-40c6-8265-89b05b35bb6a","source":"nws-api","corrected":false,"tmaxF":77,"tmaxTimeLocal":"1:34 PM","tminF":50,"tminTimeLocal":"4:13 AM","precipIn":0,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":"https://api.weather.gov/products/5a632da5-eb34-40c6-8265-89b05b35bb6a","iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIIAD&e=202611042135","parseProblems":[],"rawTextSha256":"d9b722ef10a2ad754ef133e982380769d73cc1be4f6d7514b574abff362113f9","rawText":"\n000\nCDUS41 KLWX 042135\nCLIIAD\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC \n435 PM EST WED NOV 04 2026\n\n...................................\n\n...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 4 2026...\nVALID TODAY AS OF 0400 PM LOCAL TIME.\n\nCLIMATE NORMAL PERIOD: 1991 TO 2020\nCLIMATE RECORD PERIOD: 1960 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 77 1:34 PM 81 1974 61 16 64 \n 2003 \n MINIMUM 50 4:13 AM 21 1966 39 11 37 \n AVERAGE 64 50 14 51 \n\nPRECIPITATION (IN) \n TODAY 0.00 1.95 1970 0.11 -0.11 0.00 \n MONTH TO DATE 0.00 0.44 -0.44 0.00 \n SINCE SEP 1 7.41 8.03 -0.62 3.35 \n SINCE JAN 1 36.81 37.25 -0.44 27.99 \n\nSNOWFALL (IN) \n TODAY 0.0 T 1970 0.0 0.0 0.0 \n 1991 \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 SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n TODAY 1 15 -14 14 \n MONTH TO DATE 29 59 -30 47 \n SINCE SEP 1 239 388 -149 305 \n SINCE JUL 1 239 389 -150 307 \n\n COOLING \n TODAY 0 0 0 0 \n MONTH TO DATE 0 0 0 0 \n SINCE SEP 1 268 174 94 182 \n SINCE JAN 1 1548 1230 318 1330 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190) \n HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (160) \n AVERAGE WIND SPEED 6.6 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.3 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n NO SIGNIFICANT WEATHER WAS OBSERVED. \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 97 5:00 AM \n LOWEST 42 2:00 PM \n AVERAGE 70 \n\n..........................................................\n\n\nTHE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 61 81 2022 \n MINIMUM TEMPERATURE (F) 38 19 1991 \n\n\nSUNRISE AND SUNSET \nNOVEMBER 4 2026......SUNRISE 6:40 AM EST SUNSET 5:06 PM EST \nNOVEMBER 5 2026......SUNRISE 6:42 AM EST SUNSET 5:05 PM EST \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$$\n"},{"kind":"final","asOfLocal":null,"issuedAt":"2026-11-05T07:23:00.000Z","issuedLocal":"223 AM EST THU NOV 05 2026","office":"KLWX","wmoHeader":"CDUS41 KLWX 050723","productId":"f04fe37b-d399-47af-af35-07f192a96983","source":"nws-api","corrected":false,"tmaxF":77,"tmaxTimeLocal":"1:34 PM","tminF":50,"tminTimeLocal":"4:13 AM","precipIn":0,"precipTrace":true,"snowIn":0,"snowTrace":false,"nwsProductUrl":"https://api.weather.gov/products/f04fe37b-d399-47af-af35-07f192a96983","iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIIAD&e=202611050723","parseProblems":[],"rawTextSha256":"9ef1e2378e497bbd7ae2d342c8125fd4b725652372d648e786c49001ee9cac39","rawText":"\n000\nCDUS41 KLWX 050723\nCLIIAD\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC \n223 AM EST THU NOV 05 2026\n\n...................................\n\n...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 4 2026...\n\nCLIMATE NORMAL PERIOD: 1991 TO 2020\nCLIMATE RECORD PERIOD: 1960 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 77 1:34 PM 81 1974 61 16 64 \n 2003 \n MINIMUM 50 4:13 AM 21 1966 39 11 37 \n AVERAGE 64 50 14 51 \n\nPRECIPITATION (IN) \n YESTERDAY T 1.95 1970 0.11 -0.11 0.00 \n MONTH TO DATE T 0.44 -0.44 0.00 \n SINCE SEP 1 7.41 8.03 -0.62 3.35 \n SINCE JAN 1 36.81 37.25 -0.44 27.99 \n\nSNOWFALL (IN) \n YESTERDAY 0.0 T 1970 0.0 0.0 0.0 \n 1991 \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 SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n YESTERDAY 1 15 -14 14 \n MONTH TO DATE 29 59 -30 47 \n SINCE SEP 1 239 388 -149 305 \n SINCE JUL 1 239 389 -150 307 \n\n COOLING \n YESTERDAY 0 0 0 0 \n MONTH TO DATE 0 0 0 0 \n SINCE SEP 1 268 174 94 182 \n SINCE JAN 1 1548 1230 318 1330 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190) \n HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (160) \n AVERAGE WIND SPEED 6.8 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.4 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n LIGHT RAIN \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 97 5:00 AM \n LOWEST 42 2:00 PM \n AVERAGE 70 \n\n..........................................................\n\n\nTHE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 61 81 2022 \n MINIMUM TEMPERATURE (F) 38 19 1991 \n\n\nSUNRISE AND SUNSET \nNOVEMBER 5 2026......SUNRISE 6:42 AM EST SUNSET 5:05 PM EST \nNOVEMBER 6 2026......SUNRISE 6:43 AM EST SUNSET 5:04 PM EST \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$$\n"}],"html":"https://weathermarket.io/nws-cli/KIAD/2026-11-04","json":"https://weathermarket.io/api/nws-cli/KIAD/2026-11-04"},"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/KIAD/YYYY-MM-DD (HTML) and https://weathermarket.io/api/nws-cli/KIAD/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the final NWS Climatological Report (CLI) for station KIAD for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KIAD/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."}}