With an average temperature of 25.8, last month was the coldest February in 36 years in Philadelphia, according to the National Weather Service.

The cold also was singular in its tenacity, leaving a legacy of icy sidewalks and ice-clogged waterways, with the last two weeks represented the coldest such period in Philadelphia since recordkeeping began in 1874.

Overall, it was the seventh coldest February in the period of record, with an average temeprature of 25.8, the lowest reading since the 23.0 of 1979.

The coldest February was recorded in 1934, the month of the lowest temperature ever observed in Philadelphia, -11 Fahrenheit.

- Anthony R. Wood