Hottest and Coldest Temperatures Ever in Pittsburgh on October 21

On October 21st in Pittsburgh, temperatures have varied throughout the years. In 1963, a record high of 79.0°F was reached, while in 1952, the temperature dropped to a chilly 23.0°F, marking the coldest ever recorded. On average, this date sees a temperature of 51.10°F, with a typical high of 58.11°F and a low of 44.10°F. An interesting news item from the years mentioned is that in 1952, the United States introduced the first commercial nuclear power plant, located in Shippingport, Pennsylvania, just 30 miles northwest of Pittsburgh.