Ever wonder where the weatherman gets his information? "Yesterday's low was xx degrees, two degrees below our record, set back in 1948, of xx+2 degrees." I mean, you can't just know this stuff, right?
Turns out, you can. Courtesy of Weather Underground, the free weather resource that predicts tomorrow's climate, and records yesterday's. After typing in your zip code -- sorry, people of Mozambique and Madagascar; your weather isn't good enough to track -- scroll down to the History & Almanac heading, and read up on hour-by-hour weather, any day in history. Assuming, that is, that history started in 1931.