The seasons in Destiny are not all that distinguishable from one to the next. Most climatic regions, even in freak occurances do not change temperature above or below their neighboring regions in a given year. For example: It would be a very rare occurance for the "cold" region to be colder than or equal to the "Arctic" region, or warmer than or equal to the "warm" climate. Though on occassion, certain weather conditions do exist, and change the continents weather patterns dramtically.
Temperatures and Seasons