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.
Summer weather in Philadelphia, June through September, is hot and humid, with July and August being the hottest months of the year, when daytime temperatures may reach 29Â°C / 85Â°F. At the end of the summer, thundery weather often occurs.he average snowfall is 5 cm / 21 inches. The seasons of spring and autumn feature a particularly pleasant climate, with warm weather during the days and cooler nights, making this the perfect time to visit Philadelphia. Philadelphia's annual precipitation is around 104 cm / 41 inches.