100 Degree Weather Temperature Days in PhiladelphiaFitness Gear & Equipment
They have been collecting and keeping weather data in Philadelphia since 1873. Since that time there have been at least 42 days when the temperature reached or exceeded 100 degrees. Here is a breakdown of how many 100 degree days Philadelphia has experienced by month.
What I am listing here is the dates each month that have had at least one 100 degree day in Philadelphia. Some dates have had multiple 100 degree days over the years, but I'm not listing that. I'm just listing the days of each month that have had at least one 100 degree day in any year since 1873.
The temperature in Philadelphia reached 104 degrees on Friday, July 22, 2010. That is tied for the second hottest temperature ever recorded in Philadelphia, and the hottest temperature ever recorded in July.
100 Degree Weather Temperature Days in Philadelphia by Month
May - 0
The month of May has never had a 100 degree day in Philadelphia since 1873. The hottest it has ever been in May in Philly is 97 degrees. Both May 30th and May 31st have had 97 degree days.
June - 8 out of 30 days have had at least one 100 degree day
Out of the 30 days in June, 21 dates have never had a 100 degree day.The earliest date that Philadelphia has ever experienced a 100 degree day is June 5. The hottest it has ever been in Philly in June is 102 degrees, which occurred on June 29th.
July - 23 out of 31 days
In contrast to June, the weather really heats up in July in Philadelphia. Only 8 dates in July have never had a 100 degree temperature day. So 22 dates have had at least one 100 degree weather day. The hottest temperature it has ever been in July is 104, which occurred on July 22, 2011, July 3, 1966 and July 10, 1936.
August - 8 out of 31 days
Only eight of the 31 dates in August have had a at least one 100 degree day in Philly. That does include though the all-time hottest day in Philadelphia history which is August 7, 1918, when the mercury registered 106 degrees.
September - 3 out of 30 days
Only three dates in September have seen a 100 degree or hotter day. September 2nd, September 3rd and September 7th have all had 100 degree days. The hottest it has ever been in September in Philadelphia is 102 degrees, which occurred on September 7th.
October - 0
The month of October has never had a 100 degree day in Philadelphia. The hottest it has ever been in October in Philly is 96 degrees.