Yes the pebbles are on scale, it's just that they pebbles for giants.

I too like your color palette. And I also have doubts about having as many dormers as J Edward. I guess it's mostly a matter of taste.

As for the snow, some of the cities at that latitude never ever had temperatures drop below 5 Celsius in the last 100 years or so (according to Wikipedia). People don't know what snow is.
The climate is dry but only during the dry season. The difference between the seasons can be enormous. A map made just before the rainy season would look pretty much like a desert but with trees.

When thinking about the climate, I was assuming something like the Deccan plateau in India.