We had - 0.8° C last night here, but we can do better.
The record low for Greece was - 15.2 ° C. Well, it was at an altitude of 2090 m (6860 ft) at a ski resort, but we can compete with you guys!!!
I've been at the ski resort
Kaimaktsalan and if you got bored from greek beaches, try a glass of ouzo in the snow!
Homepage of the ski resort (only in greek):
Kaimaktsalan Ski Resort. By the way: Kaimaktsalan is a turkish word and is used today - even the Greeks and Turks are still not "best friends". The meaning (litterally translated): "thief of the cream topping". You can steal personally from tomorrow on, because the season will start.