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The best time to visit Philadelphia
April, May, September and October — daytime highs around 22°C. Every number on this page is measured, not guessed.
Philadelphia month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | 5°C | -2°C | 10 | |
| February | 8°C | -1°C | 11 | |
| March | 12°C | 2°C | 11 | Shoulder |
| April | 18°C | 7°C | 11 | Best |
| May | 23°C | 13°C | 13 | Best |
| June | 28°C | 18°C | 12 | Shoulder |
| July | 31°C | 21°C | 15 | |
| August | 29°C | 20°C | 13 | Shoulder |
| September | 26°C | 17°C | 9 | Best |
| October | 20°C | 11°C | 9 | Best |
| November | 13°C | 4°C | 8 | Shoulder |
| December | 8°C | 1°C | 11 |
The short version
Warmest: July, around 31°C by day. Coolest: January, around 5°C by day and -2°C at night. Wettest: July with about 15 wet days. Driest: November with about 8.
If you want fewer people: March, June, August, November sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Philadelphia?
The best months are April, May, September and October, when daytime highs sit around 22°C.
What is the hottest month in Philadelphia?
July, with daytime highs around 31°C.
What is the wettest month in Philadelphia?
July, with about 15 wet days. The driest is November with about 8.
When is the cheapest time to visit Philadelphia?
Prices follow the weather. The months either side of the best ones — March, June, August, November — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Philadelphia, Pennsylvania. Source: Open-Meteo. Hotel and activity links are partner links — the price you pay is the same.