{"title":"Records on 1909-10-20","description":"Every record set or tied on 1909-10-20.","dataAsOf":"2026-10-17T00:00:00Z","lastRevised":"2026-10-18","source":"Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products.","licence":"US Government open data (NOAA NCEI)","page":"https://worldextremeweathermonitor.com/records/1909-10-20/","columns":[{"name":"id","description":"Stable record id: station, date, type and timescale."},{"name":"station_id","description":"GHCN-Daily station id."},{"name":"station_name","description":"Station name."},{"name":"country","description":"ISO 3166 alpha-2 country code."},{"name":"type","description":"Record type: tmax_high, tmax_low, tmin_high, tmin_low, prcp_high, snow_high or snwd_high."},{"name":"timescale","description":"daily, monthly or all-time."},{"name":"date","description":"Date the record was set, YYYY-MM-DD."},{"name":"value","description":"Record value in degrees Celsius or millimetres."},{"name":"unit","description":"c for degrees Celsius, mm for millimetres."},{"name":"previous_value","description":"The record it replaced, in the same unit. Empty for a first record."},{"name":"previous_date","description":"Date of the replaced record."},{"name":"margin","description":"How far the new value beat the old record, a non negative magnitude in the same unit. Zero for a tie."},{"name":"years_stood","description":"Whole years the replaced record had stood."},{"name":"significance","description":"Record Significance Score from 0 to 100 (see /methodology/)."},{"name":"tie","description":"True when the value tied the record."},{"name":"provisional","description":"True while the record is inside the 60 day provisional window."},{"name":"lat","description":"Station latitude in decimal degrees."},{"name":"lon","description":"Station longitude in decimal degrees."}],"rows":[{"id":"SWE00139148-1909-10-20-tmin_high-daily","station_id":"SWE00139148","station_name":"Uppsala_Aut","country":"SE","type":"tmin_high","timescale":"daily","date":"1909-10-20","value":9.8,"unit":"c","previous_value":9.5,"previous_date":"1846-10-20","margin":0.3,"years_stood":62,"significance":25,"tie":false,"provisional":false,"lat":59.86,"lon":17.63},{"id":"CA008202198-1909-10-20-tmax_low-daily","station_id":"CA008202198","station_name":"Halifax","country":"CA","type":"tmax_low","timescale":"daily","date":"1909-10-20","value":5.6,"unit":"c","previous_value":7.8,"previous_date":"1872-10-20","margin":2.2,"years_stood":36,"significance":19,"tie":false,"provisional":false,"lat":44.65,"lon":-63.6},{"id":"USW00093725-1909-10-20-tmin_low-daily","station_id":"USW00093725","station_name":"Washington","country":"US","type":"tmin_low","timescale":"daily","date":"1909-10-20","value":0,"unit":"c","previous_value":1.7,"previous_date":"1875-10-20","margin":1.7,"years_stood":33,"significance":18,"tie":false,"provisional":false,"lat":38.9053,"lon":-77.0525},{"id":"USW00013724-1909-10-20-tmin_low-daily","station_id":"USW00013724","station_name":"Atlantic City Marina","country":"US","type":"tmin_low","timescale":"daily","date":"1909-10-20","value":1.7,"unit":"c","previous_value":2.8,"previous_date":"1875-10-20","margin":1.1,"years_stood":33,"significance":15,"tie":false,"provisional":false,"lat":39.3778,"lon":-74.4236},{"id":"DA000027080-1909-10-20-tmin_high-daily","station_id":"DA000027080","station_name":"Tranebjerg","country":"DK","type":"tmin_high","timescale":"daily","date":"1909-10-20","value":10.5,"unit":"c","previous_value":10.3,"previous_date":"1874-10-20","margin":0.2,"years_stood":34,"significance":13,"tie":false,"provisional":false,"lat":55.85,"lon":10.6},{"id":"CA008101700-1909-10-20-tmax_low-daily","station_id":"CA008101700","station_name":"Fredericton 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Customs 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