Simple Definition: Climate is the average weather in a place over many years.
While the weather can change in just a few hours, climate takes hundreds, thousands, even millions of years to change.
Academic Definition: Climate is the statistics of weather, usually over a 30-year interval. It is measured by assessing the patterns of variation in temperature, humidity, atmospheric pressure, wind, precipitation, atmospheric particle count and other meteorological variables in each region over long periods of time.
Climate differs from weather, in that weather only describes the short-term conditions of these variables in each region.
Simple Definition: Weather is what the forecasters on the TV news predict each day. They tell people about the temperature, cloudiness, humidity, and whether a storm is likely in the next few days. That’s weather! It is the mix of events that happens each day in our atmosphere. Weather is not the same everywhere.
It may be hot and sunny in one part of the world, but freezing and snowy in another.
Academic Definition: is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy.
Most weather phenomena occur in the lowest level of the atmosphere, the troposphere, just below the stratosphere.