Hottest and Coldest Temperatures Ever in Washington DC on March 31

On March 31st, Washington D.C. experienced a range of temperatures, with the hottest recorded temperature being 84.9°F in 1979 and the coldest being 23.0°F in 1964. The average temperature for this date is 50.90°F, with an average high of 57.35°F and an average low of 44.46°F. Looking back in time, it is interesting to note that in 1964, during the cold spell, the iconic U.S. Capitol Building was declared a National Historic Landmark, highlighting its architectural and historical significance to the nation.