Battle of Ptolemaida happened on 1941-04-13.

Ptolemaida holds the record for the coldest place in greece

The lowest recorded temperature in a city was -27.8 Celsius at the city of Ptolemaida (Northern Greece) on 27/01/1967.

However due to the country's mountainous terain lower temperatures are likely that occured but never been recorded due to the lack of monitoring stations in remote mountainous areas.

The climate of Macedonia can be categorised into two types that influence well-defined regions of its territory. The two distinct types are the Alpine and the Temperate/Mediterranean types. The Alpine type is dominant mainly in the mountainous areas of Western Macedonia and the Temperate/Mediterranean type affects Central Macedonia and East Macedonia and Thrace; it features cold, damp winters and hot, dry summers. The lowest temperature officially measured in Greece was recorded at Ptolemaida, in Western Macedonia, and was −27.8 °C (−18.0 °F).