What will the weather be like in fifteen days?

The weather will be very good and sunny in the next 15 days.

Weather refers to the ever-changing atmospheric state, which is not only the atmospheric state in a certain time and space, but also the continuous change of atmospheric state in a certain time interval. So it can be understood as a general term for weather phenomena and weather processes. Weather phenomenon refers to various natural phenomena in the atmosphere, that is, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, snow, frost, lightning, hail, acid rain, etc.). ) in an instant. Weather process is the change of weather phenomena in a certain area with time. Weather refers to the specific state of the near-surface atmosphere in a short time, and weather phenomenon refers to various natural phenomena that occur in the atmosphere, that is, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, snow, frost, thunder, hail, etc.). ) in an instant. Weather is the change process of weather phenomena with time in a certain area.