Philadelphia Weather in January

In Philadelphia, January brings low daytime temperatures around 5°C (41°F), with nights cooling to -3°C (27°F). Expect quite a bit of snow/rainfall this month.

Rainfall in Philadelphia in January

Looking at the last 30 years, the data shows about 10 days with snow/rain, averaging 85 mm (3.3 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Philadelphia in January

In January, Philadelphia sees low temperatures, with highs of 5°C (41°F). Nights drop to around -3°C (27°F). January is in the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of -3°C (27°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. The month is typically the coldest, so be sure to prepare by packing plenty of warm clothing.

Sunshine in Philadelphia in January

The month brings about 153 hours of sunlight, offering a comfortable mix of sun and overcast.

Average water temperature in January

At 6°C (43°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Philadelphia. Our weather planner can help you explore destinations with more pleasant weather conditions.