Yes, I understand what you mean. It's a place with warm or hot summers and very cold winters.

Yes, and I think it's well-phrased. As it does to Kaidi, to me "harsh" suggests wide temperature extremes and very cold winters. "Continental" to me means a place far inland from any lakes or oceans that might have a moderating effect. In climatology there are technical terms for climate types, and "continental" is one of them. See https://en.wikipedia.org/wiki/Köppen_climate_classification . "Group D: Continental/microthermal. These climates have an average temperature above 10 °C (50 °F) in their warmest months, and a coldest month average below −3 °C (or 0 °C in some versions, as noted previously). These usually occur in the interiors of continents and on their upper east coasts, normally north of 40°N." I find that "Moscow has a humid continental climate (Köppen climate classification Dfb)" and that Astrakhan, which is where your profile says you live, has a "Midlatitude Desert Climate (BWk)".