One of our daughters was born in February 1963, the cold one, the snow didnt clear up until end of March.
We had no central heating in those days.
There was ice on the inside bedroom walls. (the bungalow was 12 months old)
No problem in those days for a new born baby, just wrap them up and keep them warm.
The young lady grew up tough, a boxing champion is still looking for her after she put him down.