Best Time to Visit Philadelphia
United States · 30-year monthly climate averages
☀️ When to go
Based on 30 years of climate data, the most comfortable months to visit Philadelphia are May, September and October, when daytime temperatures are agreeable and rainfall is relatively low.
Climate profile
Philadelphia sees its warmest weather in July, when daytime highs average around 31°C, and its coolest in January (around 5°C).
Annual precipitation totals roughly 1121mm — September is typically the wettest month (~112mm) and February the driest (~70mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
Year at a glance
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
🔥 Recent heat vs normal
Daily forecast highs vs the 30-year normal — last 37 days
Each bar is one day: orange above normal, blue below.
Month by month
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 5° / -3°C | 80mm | 🤔 Fair |
| February | 7° / -2°C | 70mm | 🤔 Fair |
| March | 12° / 1°C | 101mm | 🤔 Fair |
| April | 18° / 7°C | 88mm | 👍 Good |
| May | 24° / 12°C | 85mm | 🌟 Great |
| June | 28° / 18°C | 103mm | 👍 Good |
| July | 31° / 21°C | 111mm | 🤔 Fair |
| August | 30° / 20°C | 109mm | 👍 Good |
| September | 26° / 16°C | 112mm | 👍 Good |
| October | 20° / 10°C | 88mm | 👍 Good |
| November | 13° / 4°C | 74mm | 🤔 Fair |
| December | 8° / 0°C | 101mm | ⚠️ Challenging |
FAQ
- What is the best time to visit Philadelphia?
- Based on 30 years of climate data, the most comfortable months to visit Philadelphia are May, September and October, when daytime temperatures are agreeable and rainfall is relatively low.
- What is the hottest month in Philadelphia?
- July is typically the hottest month in Philadelphia, with average daytime highs around 31°C.
- What is the rainiest month in Philadelphia?
- September is usually the wettest month, with around 112mm of precipitation.