Question

As the relative humidity increases, there is possibility of rain fall. why​

Answer 1

Answer:

Connection of Rain and Humidity

When it rains, it will increase the relative humidity because of the evaporation. The air where the rain is falling may not be completely saturated with water vapor. ... On a larger scale, rain will remove water vapor through air condensation and deposit it on the surface.

Answer 2

Answer:

Thus humid air gets cooled as it rises vertically through the atmosphere & thus a point reaches when temperature of humid air falls below its dew point temperature (at which condensation starts) thus surplus amount of water vapor starts condensing & drops falls in form of rain.