Whither the withering winters of yesteryear?

Although the temperature was a least two degrees above freezing, the dense, damp fog leeched a deep chill into the very marrow of our bones, and I think I felt colder in that Hertfordshire ‘Country Garden’ than I ever felt in the January streets of New York despite below-zero temperatures and a blast off the Hudson River that brought the wind chill factor down to -30C.
Trees, and family members, loomed out of the fog in the arboretum, and I thought “What the hell are we doing here?! Outdoors is great but at the cost of a week indoors in bed!” Someone had to voice the question, and as soon as I did so, I found all-round assent.