{"title":"Records on 1909-04-18","description":"Every record set or tied on 1909-04-18.","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/1909-04-18/","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":"ITE00100554-1909-04-18-tmax_high-daily","station_id":"ITE00100554","station_name":"Milan","country":"IT","type":"tmax_high","timescale":"daily","date":"1909-04-18","value":26.5,"unit":"c","previous_value":25.3,"previous_date":"1865-04-18","margin":1.2,"years_stood":43,"significance":26,"tie":false,"provisional":false,"lat":45.4717,"lon":9.1892},{"id":"CA006115810-1909-04-18-prcp_high-daily","station_id":"CA006115810","station_name":"Orillia","country":"CA","type":"prcp_high","timescale":"daily","date":"1909-04-18","value":18.5,"unit":"mm","previous_value":13.5,"previous_date":"1877-04-18","margin":5,"years_stood":31,"significance":20,"tie":false,"provisional":false,"lat":44.6167,"lon":-79.4},{"id":"GME00127186-1909-04-18-prcp_high-daily","station_id":"GME00127186","station_name":"Passau-Maierhof","country":"DE","type":"prcp_high","timescale":"daily","date":"1909-04-18","value":9.1,"unit":"mm","previous_value":5.2,"previous_date":"1879-04-18","margin":3.9,"years_stood":29,"significance":19,"tie":false,"provisional":false,"lat":48.5817,"lon":13.4167},{"id":"GM000004063-1909-04-18-tmax_high-daily","station_id":"GM000004063","station_name":"Bamberg","country":"DE","type":"tmax_high","timescale":"daily","date":"1909-04-18","value":24.9,"unit":"c","previous_value":21.2,"previous_date":"1885-04-18","margin":3.7,"years_stood":23,"significance":17,"tie":false,"provisional":false,"lat":49.8753,"lon":10.9217},{"id":"GM000004204-1909-04-18-tmax_high-daily","station_id":"GM000004204","station_name":"Jena 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