Weather is the day-to-day conditions of a particular place.
When you talk about weather, you are really talking about the air and what it is like in any one place at anyone time.
For example: How hot or cold is the air? How much dampness, or moisture, is in it? How fast is the air moving? How heavily does it press on the earth?
Daily changes in the weather are due to the wind and storms.
Seasonal changes are due to the Earth rotating around the sun.
Weather is an important part of our lives and is one that we cannot control.
Instead the weather often controls how and where we live, what we do, what we wear and what we eat.