Hottest and Coldest Temperatures Ever in Allentown on January 21

On January 21st in Allentown, the temperature varied significantly over the years. In 1959, a record-breaking heat wave saw temperatures soar to 63.0°F, while in 1994, the city experienced a frigid low of -15.0°F. On average, the temperature on this date is 28.16°F, with a high of 36.68°F and a low of 19.63°F. In light of these extremes, it's worth noting that during 1959, the first successful docking of two spacecraft occurred as the Soviet Union's Luna 1 and USA's Pioneer 4 passed each other in space, marking an important milestone in space exploration.