This video from the BBC talks about where weather apps get their information and how it is presented to people. The video also talks about why weather apps can be wrong sometimes.
In the lesson students will talk about using apps, percentage and odds and, of course, bad weather! The listening questions are true and false and the speaking is very clear, so pre-intermediate level students should be able to handle the material. If you are studying alone the answers are at the bottom of the third page.