Hottest and Coldest Temperatures Ever in Washington DC on December 31

On December 31st, Washington D.C. experienced a range of temperatures throughout history. The highest ever recorded temperature was a balmy 70.0°F in 1965, while the coldest temperature dipped to 10.0°F in 1963. On average, this date sees a temperature of 38.16°F, with a typical high of 44.84°F and a low of 31.48°F. In an interesting news item from the past, it was reported in 1965 that the historic Washington Monument, standing tall in the heart of the city, was designated as a National Historic Landmark, symbolizing the capital's rich history and architectural significance.