When I was a boy, we had temperatures of -25°C to -30°C nearly every winter. 5km with bicycle to school.
When I was a young man, we had only temperatures of -15°C to -20°C. Record: -18°C with Piaggio Quartz 50cc to the office, 60km (!) one way. Global warming.
When I became old and a softy, I moved to the warmest area in Germany. Last year record -11°C and only 10km to office.