Average Temperatures for Philadelphia. Philadelphia's coldest month is January when the average temperature overnight is 25.5Â°F. In July, the warmest month, the average day time temperature rises to 85.5Â°F.The driest month in Philadelphia is February with 2.74 inches of precipitation, and with 4.39 inches July is the wettest month.n July, the warmest month, the average day time temperature rises to 85.5Â°F. The driest month in Philadelphia is February with 2.74 inches of precipitation, and with 4.39 inches July is the wettest month.
1 A data set has three quartiles: the lower quartile, the median of the data set, and the upper quartile. 2  Median: The median divides a data set into two equal parts. 3  Lower quartile: Median of the lower half of the data. 4  Upper quartile: Median of the upper half of the data.
What is a Quartile. Quartiles are the values used to divide a set of numbers into four equal groups. Put the numbers in order and divide them in half using a median.To the left of the median, the numbers are separated again, and to the right of the median, make a third separation.hat is a Quartile. Quartiles are the values used to divide a set of numbers into four equal groups. Put the numbers in order and divide them in half using a median.