Before there were weather tools, people looked to the sky, plants, and animals for hints about what the weather would do. To remember these indicators, people coined weather sayings. But are these sayings true and reliable? This lesson explores the truth and reliability of weather-related sayings, such as, “Mare's tails and mackerel scales make tall ships take in their sails.” Students brainstorm weather sayings and then investigate the accuracy and origins of the sayings in predicting the weather, using print and online resources in their research. Next, students write about and illustrate their weather sayings and then share their results with their classmates. Finally, students discuss skepticism and when it may be a good response to information that is presented to them as fact.