06/21/2026
Washington, D.C. hit 100°F on this date in 1853.
Then it reached 105°F on June 30th, which if included in the “official” record (1872-present), would be the city's “all-time” record high for June. A total of four days that month reached 100°F, which eclipses the two each in Junes 1874 and 1959.
If this happened today, climastrologists would be 100% certain it was “virtually impossible” without your SUV's carbon sins.