Ratio data is interval data with a natural zero point. For example, time is ratio since 0 time is meaningful. Degrees Kelvin has a 0 point (absolute 0) and the steps in both these scales have the same degree of magnitude.
Bethlehem, PA Weather. The average temperature of Bethlehem is 51.25Â°F, which is higher than the Pennsylvania average temperature of 49.80Â°F and is lower than the national average temperature of 54.45Â°F. Historical Weather.
Average Temperatures in Philadelphia, Pennsylvania, Usa. 1  The annual mean temperature in Philadelphia, Pennsylvania, Usa is quite mild at 12.4 degrees Celsius (54.3 degrees Fahrenheit). 2  The variation of average monthly temperatures is 25.7 C (46.3 F) which is a moderate range.hiladelphia, Pennsylvania Average Temperatures Chart. The average temperature charts use a fixed scale so that you can easily compare temperatures between two or more locations. Simply line up the charts in separate tabs in your browser and toggle between tabs to visualise the differences.