Typical Weather in Philadelphia, PA in January
41° F Avg High
28° F Avg Low
7 Rainy Days
☀️ Temperature Summary
January is one of the cooler months of the year for Philadelphia, with highs averaging around 41°F. Overnight lows can reach 28°F. This is the coldest month of the year in Philadelphia.
Despite it being the coolest month of the year, January is still a great time to visit Philadelphia, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
You can expect about a 23% chance of rain for any given day in January. It's one of the rainier months of the year for Philadelphia, with total rainfall for the month around 4 inches.
Rainfall Throughout the Year
Planning a trip to Philadelphia? Try our free trip weather planner