Weather is the state of the atmosphere at a particular place and time, defined by various meteorological elements such as temperature, precipitation, atmospheric pressure, wind, and humidity. It describes short-term atmospheric conditions, such as whether it is sunny, rainy, windy, hot, cold, cloudy, or stormy. Weather changes frequently and affects daily activities and safety, distinguishing it from climate, which is the average weather over long periods, typically 30 years or more.