Can there be some pretty big temperature differences at "45° north"?
My main reason for asking is in the two worlds I've played the most in, they have had very different temperature patterns. On one, even in the peak of summer it never gets above 20-25 C, and in the winter gets down to -20, with snow falling as early as October and persisting until well into April. On another, it was getting well into the 30's by early summer, and didn't get snowfall until January, and didn't stay freezing for long. Both have bases built at spawn, and have default temperature settings in worldgen.