A casual phrase or search query shorthand for inquiring about the meteorological conditions and forecast in St. Louis, Missouri—a Midwestern U.S. city famed for its Gateway Arch and a climate that flips from sunny to 'why is it hailing?' faster than a politician changes promises.

Colloquial reference to the notoriously variable weather patterns in St. Louis, often featuring humid summers, chilly winters, thunderstorms, and the occasional tornado warning that sends everyone to the basement for family game night.