Definition of “weather” - Learner’s Dictionary

weather

noun [ U ] us uk /ˈweðər/
Extra Examples
Bad weather could jeopardize all our plans.We should make the most of this good weather.The wonderful weather was our chief reason for coming here.The weather will dictate where we hold the party.The weather was very changeable last summer.

A1 the temperature or conditions outside, for example if it is hot, cold, sunny, etc:

The flight was delayed because of bad weather.

(Definition of “weather noun” from the Cambridge Learner's Dictionary © Cambridge University Press)