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Weather in Philadelphia in October

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October  is a good time to visit Philadelphia, Pennsylvania as the summer heat is gone and the winter cold has not yet arrived. The autumn colors usually peak here from mid-October to early November and the weather is ideal for most outdoor activities.

Early in the month, the afternoon temperatures are very pleasant, averaging in the lower 70s f (22-23C) with overnight lows in the mid to upper 50s f (about 14C).  A couple of days early in the month could even see temperatures into the lower 80s f (about 27-28C).  As the month progresses, daytime high temperatures will fall into the low to mid 60s f (17-18C) with overnight lows in the mid to upper 40s f (8-9C).

What to wear in Philadelphia during October?

October can range from mild to chilly here so a few sweaters or a light to medium weight jacket would be advisable for those chilly days or nights.

Skies will be clear or partly sunny on about 19-20 days with 11-12 days being mostly overcast.  Rain can be expected on about 8 days this month, however, significant rainfalls of 0.5 inch (about 13mm) or more occur, on average, on about 2 days.

Overall, the weather is great, so join us for our Independence Mall Tour or our Real Philadelphia Tour!

About The Author

Fred Pickhardt

Fred is a marine meteorologist and sailed briefly with American Export Lines in the Far East trade. He has extensive experience in weather analysis, weather forecasting, and forensic weather event reconstructions. Fred founded Ocean Weather Services and currently provides forensic marine weather reports to the maritime industry.
Updated: September 27th, 2021
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