Philadelphia weather in December (Pennsylvania, United States of America)

What can you expect from the weather in Philadelphia during December? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In December, Philadelphia typically experiences low temperatures and high rainfall. December is a winter month. Daytime temperatures hover around 9°C, while nights can cool down to about 1°C.

Philadelphia in December usually receives high rainfall, averaging around 123 mm for the month. Rain is expected on roughly 12 days.

The area experiences a moderate amount of sunshine, with approximately 140 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Philadelphia. May typically offers the most optimal weather. In contrast, January, February and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Philadelphia climate page with graphs.

 

Philadelphia, monthly averages in December

Min Temperature 1°C  

Max Temperature 9°C  

Water Temperature 9°C  

Chance of Rain 38%  

Precipitation 123 mm  

Rainy days 12 days  

Humidity 67%  

Sunshine 140 hours  

Percentage Sunshine 48%  

Where to go in the United States of America in December

Find out more about the weather in the United States of America in December and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Philadelphia in December?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature. With a water temperature of around 9°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in December.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Philadelphia.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.