I've been trying to track weather but so far I haven't found any pattern. However, at least the air temperature is easy to figure out. The lowest point (usually between -20 and -30°C) is exactly at dawn, when "hours of darkness" change into "hours of daylight". The highest temperature is exactly when "6 hours of daylight left" turns into "5 hours of daylight left". Between these two points the temperature follows a straight line in time - a sawtooth pattern. The only exception are blizzards, whi