Weather lore is the body of informal folklore related to the prediction of the weather.
It has been a human desire for millennia to make accurate weather predictions. Oral and written history is full of rhymes, anecdotes, and adages meant to guide the uncertain in determining whether the next day will bring fair or foul weather. For the farmer wanting to plant crops, for the merchant about to send ships on trade, foreknowledge of tomorrow's circumstances might mean the difference between success and failure. Prior to the invention of the mercury barometer, it was very difficult to gather numerical data of any predictive value. Even though there were devices such as the weather stick which gave some indication of moisture changes, the only instrument of any reliability was human experience.
Farmers' Almanac is an annual North American periodical that has been in continuous publication since 1818. Published by the Almanac Publishing Company of Lewiston, Maine, it is famous for its long-range weather predictions and astronomical data, as well as its trademark blend of humor, trivia, and advice on gardening, cooking, fishing, and human interest. Conservation, sustainable living, and simple living are core values of the publication and its editors, and these themes are heavily promoted in every edition.
In addition to the popular U.S. version, the Almanac Publishing Company also publishes the Canadian Farmers' Almanac and a promotional version that businesses can personalize and distribute to customers. The total annual distribution of all Farmers' Almanac editions is more than 4 million copies.