The coldest Christmas Day in Greece occurred in 1909 (old calendar) according to the records of the historic climate station of the National Observatory of Athens (NOA) permanently stationed at the Nymphs Hill in the Thissio area that has abeen providing valuable information about Athens' weather since 1890. "With a typical temperature in December being close to 10C (50F), the possibility of snowfall in Athens on Christmas is dishearteningly low, even if it has occurred occasionally during the last 125 years, more often during the first decades of the 20th century," a report says by ClimateHub, the information hub for national energy needs and renewable energy sources in Greece. The coldest day in Greece was on December 25, 1909 under the Julian calendar, but January 10, 1910 under the current Gregorian calendar, adopted after 1923. The average temperature registered in Athens did not rise above 4C (39.2F) during the day and dropped to 2C (35.6F) during the night. There were other years however with very low temperatures, of around 5C (41F) and much lower at night in Athens, according to the ClimateHub team report: 1933, 1937, 1953, 1986, 1987 and 1992. However, on Christmas Eve in 1949 it snowed all night long in Athens, as it did in some other years (most recently in 1991 and 1992), while a heavy winter and snowfall between December 27, 1941 and January 5, 1942 in Athens added to residents' hunger during the German occupation, ClimateHub added. ClimateHub is coordinated by the NOA-ReACT of the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing/NOA. It is supported by the European project Copernicus Climate Change Service National Collaboration Programme C3S-NCP. Διαβάστε περισσότερα στο iefimerida.gr