WeatherWill it be warm or cold? Should we wear shorts or pants? Shoes or boots? Read and find out why the weather is so difficult to predict.

Lynda DeWitt is an editor in the Educational Media Division of the National Geographic Society, and has published wildlife articles in various publications.She lives in Washington, D. C.
Carolyn Croll is the author/illustrator of several books for children and has illustrated numerous other titles, including another Let’s-Read-and-Find-Out Science Book, Switch On, Switch Off by Mel Berger.She lives in Philadelphia.