Climate is a very interesting phenom. Always changing. 2015-16 we had warm drought winter with lizards running around in Jan. Instead of hibernating. A vol. tomato grew all winter & i moved it into the garden in the spring. Last 20 yrs all have froze. Short term climate/weather (called "normal") is average of high/low temps. But from how long? Probably not very. Seldom is one year same as preceeding. We are zone 9b, basically, sub-tropic. I'm starting to understand how things grow here. Another climate etc. Would be learning/adjustment. Climate, to me, is always changing.