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This post is about the weather in DC in December, as well as what to wear and suggestions on things to do this month.
Daytime high temperatures early in December tend to be mostly in the lower-50s F(11-12 C) with a few of the warmer days can reach up 64 F (about 18 C) or more.
Overnight low temperatures at this time are mostly in the mid-30s F (1-3 C).
As the month progresses, the afternoon high temperatures generally fall to the mid-40s F (6-7 C) while the early morning lows tend to be in the upper-20s F to lower-30s F (-3 C to -1 C).
About 16 days this month will see minimum temperatures dipping to 32 F (0 C) or less with a couple of the colder days dipping into the lower-20s F (about -6 C).
In the past, DC has seen temperature extremes during December as high as 79 F (26.1 C) to a low as +1 F (-17.2 C).
About 17 days this month will see sunny or at least partly sunny skies over DC with some form of precipitation falling on 9 or 10 days.
Significant precipitation amounts of 0.5 inches (13mm) or more, however, usually occur on only 2 or 3 days.
Snow does occur this month but measurable snowfalls, on average, occur on only 1 or 2 days with snowfalls of 1 inch (2.5cm) or more occurring on one day every year or two and snows of 3 inches (7.6 CM) or more falling only about once every 5 years.
Be sure to read out post on What to Wear and Pack in DC for advice all year round on DC weather and how to prepare for it.
It is best to dress in layers so bring a couple of sweaters and at least one medium-weight jacket or coat for early in the month.
However, as Christmas approaches, heavier winter clothing, including a heavy coat or jacket, warm hat, and gloves and boots will likely be needed by mid-month.
Below are 10 top things to do in DC in December.
Be sure to read our full post on what to do in DC in December which includes free things to do, night and family-friendly activities and attractions, as well as our definitive post on the best things to do in DC.
And if you are planning on visiting many of DC’s top attractions, then you should consider a tourist discount pass as you could save up to 50% of retail ticket prices to tours, attractions, and restaurants.
Be sure to check out all the top things to do in December in our main post.