Hottest and Coldest Temperatures Ever in Philadelphia on January 01

On January 1st, Philadelphia experienced a range of weather conditions. The mercury rose to a record-breaking high of 64.0°F in 2005, while plummeting to a bone-chilling low of 6.3°F in 2018. The average temperature for this date is 35.59°F, with a moderate average high of 42.62°F and a chilly average low of 28.56°F. In an interesting twist, in the same year of 2005, Philadelphia news reported a rare sighting of a snowy owl, native to Arctic regions, which had made a temporary home in the city's Fairmount Park, adding a touch of wintry enchantment to the New Year festivities.