Philadelphia Weather in January

Thinking of visiting Philadelphia in January? Expect moderate temperatures reaching 13°C (55°F) during the day, dropping to 1°C (34°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Philadelphia in January

Looking at the last 30 years, the data shows about 9 days with rain, averaging 130 mm (5.1 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Philadelphia in January

If you're visiting Philadelphia in January, expect highs of 13°C (55°F) and overnight lows around 1°C (34°F). The winter season is characteristic of January. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. This month is marked by the mildest temperatures of the year.

January in Philadelphia can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.