Weather in Washington D.C. in December
How warm is it in Washington D.C. in December?
In December the typical daytime high in Washington D.C. is 8.1 °C on average, from 10.2 °C at the start to 7.2 °C at the end of the month.
That is 5.3 °C cooler than in November and 1.9 °C warmer than in January.
The last 10 years were 1.4 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
Measured at the weather station Washington, 2 km away.