Hottest and Coldest Temperatures Ever in Allentown on June 18

On June 18th in Allentown, the temperature ranged from a historic high of 95.0°F in 1957 to a chilly low of 44.1°F in 1958. The average temperature for this date is 70.36°F, with an average high of 75.13°F and an average low of 65.60°F. Interestingly, in the year 1957, when the hottest temperature was recorded, President Dwight D. Eisenhower sent federal troops to enforce the integration of schools in Little Rock, Arkansas, marking a significant moment in the civil rights movement.