Hottest and Coldest Temperatures Ever in Washington DC on May 10

On May 10th in Washington, D.C., the hottest temperature ever recorded was 95.0°F in 1963, while the coldest temperature ever recorded was 36.0°F in 1966. The average temperature for this date stands at 64.59°F. Typically, the average high temperature reaches 70.49°F, with the average low temperature dropping to 58.69°F. In 1963, an interesting news item to note is that the United States signed a nuclear test ban treaty with the Soviet Union and the United Kingdom, demonstrating efforts towards arms control during the Cold War.