Hottest and Coldest Temperatures Ever in Allentown on March 21

On March 21st in Allentown, Pennsylvania, temperatures have been known to range from a scorching high of 73.9°F in 2010 to a chilling low of 10.0°F in 1956. On average, the temperature for this date hovers around 40.53°F, with a typical high of 46.28°F and a low of 34.79°F. In more recent years, the city experienced a notably warm day in 2010. Interestingly, in that same year, a rare meteor shower lit up the sky, captivating residents with its stunning display.