Hottest and Coldest Temperatures Ever in Washington DC on January 21

On January 21st in Washington D.C., temperatures have ranged from a scorching 70.0°F in 1959 to a bone-chilling -4.0°F in 1985. The average temperature for this date is 34.01°F, with an average high of 41.83°F and an average low of 26.18°F. In the year 1959, besides witnessing the hottest temperature on record, it is interesting to note that this was also the year when Hawaii became the 50th state of the United States, joining the union on August 21st.