Hottest and Coldest Temperatures Ever in Allentown on March 20

On March 20th in Allentown, the weather has seen fluctuations over the years. The hottest temperature ever recorded was a scorching 77.0°F in 2012, while the coldest temperature dipped to a freezing 10.9°F in 1967. On average, this date sees a temperature of 40.77°F, with a high of 46.19°F and a low of 35.34°F. During this time, some interesting news from 2012 is that NASA's Curiosity rover discovered evidence of an ancient streambed on Mars, furthering our understanding of the planet's history and potential for harboring water.