1841: The average annual snowfall in Philadelphia is slightly more than 22”. In April, Philly averages a half an inch of snow and there is measurable snow in April there only once every other year. 1841 was not so kind to Philadelphia. Unusual late season cold lingered for much of the month and a series of storms swept out of the Gulf of Mexico and up the East Coast of the United States bringing one snow event after the other. 6” of snow fell in the city on April 10th and 3” fell on Aril 13 and 14th, but the heaviest snowfall occurred in between those two systems when a foot of the white stuff piled up on April 12, 1841. Almost 20” of snow fell on Philadelphia in April 1841 – the average for an entire winter season.
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