Real Dictionary

climate
adjective: Climate means relating to climate change.
countable noun: You can use climate to refer to the general atmosphere or situation somewhere.
variable noun: The climate of a place is the general weather conditions that are typical of it.

climate in American English
the prevailing or average weather conditions of a place, as determined by the temperature and meteorological changes over a period of years
noun: the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years

climate in British English
noun: the long-term prevalent weather conditions of an area, determined by latitude, position relative to oceans or continents, altitude, etc