{"title":"Records on 1911-05-01","description":"Every record set or tied on 1911-05-01.","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/1911-05-01/","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":"CA006127887-1911-05-01-prcp_high-daily","station_id":"CA006127887","station_name":"Southampton","country":"CA","type":"prcp_high","timescale":"daily","date":"1911-05-01","value":35.6,"unit":"mm","previous_value":19.1,"previous_date":"1884-05-01","margin":16.5,"years_stood":26,"significance":37,"tie":false,"provisional":false,"lat":44.5,"lon":-81.3667},{"id":"RSM00026063-1911-05-01-prcp_high-daily","station_id":"RSM00026063","station_name":"St. 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U","country":"CA","type":"prcp_high","timescale":"daily","date":"1911-05-01","value":22.1,"unit":"mm","previous_value":21.8,"previous_date":"1893-05-01","margin":0.3,"years_stood":17,"significance":9,"tie":false,"provisional":false,"lat":44.25,"lon":-76.5},{"id":"UPM00033345-1911-05-01-tmin_high-daily","station_id":"UPM00033345","station_name":"Kiev","country":"UA","type":"tmin_high","timescale":"daily","date":"1911-05-01","value":12.3,"unit":"c","previous_value":11.5,"previous_date":"1897-05-01","margin":0.8,"years_stood":13,"significance":9,"tie":false,"provisional":false,"lat":50.4,"lon":30.5331},{"id":"CA006164297-1911-05-01-tmin_high-daily","station_id":"CA006164297","station_name":"Lakefield","country":"CA","type":"tmin_high","timescale":"daily","date":"1911-05-01","value":14.4,"unit":"c","previous_value":13.3,"previous_date":"1899-05-01","margin":1.1,"years_stood":11,"significance":8,"tie":false,"provisional":false,"lat":44.4667,"lon":-78.2333},{"id":"RSM00027857-1911-05-01-prcp_high-daily","station_id":"RSM00027857","station_name":"Zametchino","country":"RU","type":"prcp_high","timescale":"daily","date":"1911-05-01","value":5.8,"unit":"mm","previous_value":5.4,"previous_date":"1891-05-01","margin":0.4,"years_stood":19,"significance":8,"tie":false,"provisional":false,"lat":53.5,"lon":42.62},{"id":"UPM00033345-1911-05-01-tmax_high-daily","station_id":"UPM00033345","station_name":"Kiev","country":"UA","type":"tmax_high","timescale":"daily","date":"1911-05-01","value":25.7,"unit":"c","previous_value":25,"previous_date":"1897-05-01","margin":0.7,"years_stood":13,"significance":8,"tie":false,"provisional":false,"lat":50.4,"lon":30.5331},{"id":"CA008100990-1911-05-01-tmax_high-daily","station_id":"CA008100990","station_name":"Chatham","country":"CA","type":"tmax_high","timescale":"daily","date":"1911-05-01","value":18.3,"unit":"c","previous_value":17.8,"previous_date":"1899-05-01","margin":0.5,"years_stood":11,"significance":6,"tie":false,"provisional":false,"lat":47.05,"lon":-65.4833},{"id":"USC00475484-1911-05-01-tmax_low-monthly","station_id":"USC00475484","station_name":"Milwaukee 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