Records

Washington's standing daily records, –. They come from the threaded record that joins Reagan National with earlier downtown sites. Ties go to the most recent year.

When each record was set

Darker means more recent. Outlined days were set or tied in or : of them for .

A warming tilt

Each bar counts the standing records whose year falls in that decade. A stable climate would spread them about evenly; instead, recent decades hold most of the highs and almost none of the lows.

The biggest snowstorms

A storm here is a run of consecutive days with at least 0.1″ of snow; a day without snow ends it. Reliable snowfall measurements start in 1884.