* Weather changes for all kinds of reasons.
* The UK has one of the most unpredictable kinds of weather in the world as a result of changes between settled and changeable periods.
* Weather can change because of local conditions, too. For example, mountains are cold and they block air, making one side snowy and the other side dry.
* Coasts get breezes that make it cooler, and sunnier than inland, while cities make it warmer.