Weather in Philadelphia
What's the weather like in Philadelphia?
Philadelphia has a wide swing between hot summers and cold winters and moderate rainfall spread across the year. Average daytime highs range from 5°C (41°F) in January to 30°C (87°F) in July, with overnight lows around -3°C (26°F) and 21°C (70°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit Philadelphia are May through June, and September through October.
Quick facts
- Country
- 🇺🇸 United States
- Region
- North America
- Time zone
- America/New_York
- Coordinates
- 39.953, -75.165
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 5°C / 41°F | -3°C / 26°F | 83 mm | 14 | — |
| February | 7°C / 45°F | -2°C / 28°F | 96 mm | 14 | — |
| March | 11°C / 52°F | 1°C / 34°F | 101 mm | 15 | — |
| April | 17°C / 63°F | 7°C / 44°F | 106 mm | 17 | — |
| May | 23°C / 73°F | 13°C / 55°F | 108 mm | 17 | — |
| June | 28°C / 82°F | 18°C / 64°F | 107 mm | 17 | — |
| July | 30°C / 87°F | 21°C / 70°F | 123 mm | 19 | — |
| August | 29°C / 85°F | 20°C / 68°F | 106 mm | 18 | — |
| September | 26°C / 79°F | 17°C / 62°F | 101 mm | 14 | — |
| October | 20°C / 67°F | 11°C / 51°F | 106 mm | 15 | — |
| November | 13°C / 55°F | 4°C / 38°F | 79 mm | 11 | — |
| December | 8°C / 47°F | 0°C / 33°F | 111 mm | 12 | — |
Philadelphia by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to Philadelphia
Frequently asked questions
When is the best time to visit Philadelphia?
The most comfortable months in Philadelphia are usually May, September, October, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in Philadelphia?
July is typically the hottest month in Philadelphia, averaging a high of 30°C (87°F).
What is the coldest month in Philadelphia?
January is usually the coldest, with average lows around -3°C (26°F).
Does it snow in Philadelphia?
Snow is rare in Philadelphia; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.