The globe was warming, when global warming wasn't cool...

Met Office: Olympic Games

1928: At the 1928 winter games in St Moritz the 50 km cross country race took place in unusual weather conditions. At the start the temperature was a predictable 0 °C but by the end it had risen to 25 °C — a temperature almost unheard of in February – resulting in a third of the competitors having to give up. The warm conditions also affected the ice rink and led to the speed skating being cancelled.

1932: Four years later in Lake Placid, warm weather also affected the winter games and led to them being extended by two days.

1964: In 1964 the Innsbruck games seemed to be at risk of not going ahead because of the lack of snow, until the Austrian army intervened by transporting snow from other areas. When rain threatened to wash away the snow ten days before the event the army went in and packed down the slopes by foot. Nowadays artificial snow is often used.