Hello, Greatgardens,
unfortunately I am not familiar with the zone system. So I can only describe the climate here in general.
In principle we have a continental climate, but quite strongly influenced by the Atlantic. Summers are colder than those in typically continental climates - average July temperatures 14 - 19°C. On the other hand, winters are warmer: average January temperatures between -1 and -5. Annual precipitation 500 - 700 mm (litres per square meter). That means that years differ from each other quite a lot. 2018 was a very dry and hot year unlike 2020 that was much colder and incomparably wetter.
I live at 150 meters above mean sea level by the river Elbe, but my garden is at 570 m a.m.s.l. A typical difference between the two places - only 13 km from each other - is 4 or 5°C. At the moment the temp down here is about +5, up there it's +1°C. Night temps +2 here and -2 up there. It snowed up there but rained here. I don't know what place in the USA I could compare it to. Sorry.
Milan HP
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