First of all: thank you so much for saying it has come a long way! Coming from you, who have been following the project for the longest time, it means a lot!
With regards to the coldness/snow: I did a research on this. It can snow pretty much everywhere in Greece, though it is not common in the southern parts, where the climate is truly mediterranean. On the northern parts of Greece, however, it does snow pretty much every winter and even multiple times per year.
In a previous devlog, I mentioned that game story is located in northern Greece, in Thrace. The city is inspired in ancient Maronesia, not far from modern day Alexandropolis. Here are some images of that city under snow.
Apparently, Alexandropolis experiences snow multiple times per winter, but usually it melts quickly. Unfortunately, I couldn't animate it well if the snow were to melt quickly, because only have 36 frames. If I was to represent snow melting in lwess than 10 days, the snow would only appear in a single frame and that would make for a horrible animation. I thus decided to allocate 100 days for the snow to melt, 10 frames, clearly departing from reality.
Perhaps it was colder there 2400 years ago? I don't know!