The fall of 1976 and winter of 1977 in the central US, were so brutally cold they were used as “proof” we were entering the Coming Ice Age!
I should also mention that in 1977 winter, the Continental US had 30 days complete cloud cover for the entire month of January or Feb.
Wonder how solar panels would work in such weather!
So brutally cold I caught my first case of pneumonia and spent a week in the hospital. I was 30 years old.