Let’s face it: We cannot live without our weather forecasts. It’s the first thing we check most mornings — and when they’re wrong, we get pretty frustrated. But forecasting is actually the best it’s ever been! Harry learns the secrets to predicting the weather accurately and investigates how climate change could make those predictions a little cloudier.

If you enjoy Margins of Error, CNN would love to hear from you.  Please visit: cnn.com/margins to take a brief survey.

To learn more about how CNN protects listener privacy, visit cnn.com/privacy