Ice day for some in northern and central Greece, also for the northernmost
suburbs of Athens, as day time temperatures failed to reach 0.0C over many
areas. Some night time minima:

Ptolemaida: -12C
Grevena: -11.4C
Kozani: -9C
Naousa: -8C
Retziki, Thessaloniki: -7.7C
Alexandroupolis: -7C
Giannitsa: -6.4C
Larisa: -6C
Tripolis: -6C
P. Penteli (Athens): -4.5C
Thessaloniki: -4C
E. Athens: -1.3C

....all the way up to +9C at Kefallonia. Mykonos has been reporting snow
grains throughout most of the day, while Kos, in the southeastern Aegean,
reported snowfall earlier, too.

Yannis, SE Athens
+1.6C atm slowly dropping. Ground frost causes any water spilled on surfaces
freeze within a few seconds. Some snow flurries yesterday evening.