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December was remarkable for high temperature anomalies in Europe and North America. Many maximum temperature records and high minumum temperature records were broken in the leadup to and on Christmas day, particularly in North America.
2015 is set to be the hottest year on record, but already the UK Met Office has projected that 2016 will likely be hotter still.
In New York City shorts and T-shirts were still being worn, and tomatoes were still ripening. Many people highlighted the irony of turning on air-conditioning at Christmas. Some even pondered having a christmas barbecue or pool party.