The best time to visit Philadelphia
Month-by-month climate averages for Philadelphia, PA, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Philadelphia is usually April, May, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest July rain is behind you.
Philadelphia is warmest in July (highs near 87°F) and coldest in January (lows around 26°F), with roughly 48 inches of precipitation across the year and July the wettest month. The sweet spot for most visitors is April, May, September and October. Expect overnight frost in January, February and December.
These are long-run averages. For the actual days you are travelling, check the live Philadelphia forecast - and note how much the models agree, because that tells you how much to trust it.
Philadelphia weather by month
what to expect in Philadelphia through the year, 1991-2020 averagesHere is Philadelphia's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Philadelphia by season.