troposphere
Yes. Actually, it is the coldest layer in the atmosphere.
Not necessarily. Rain can fall when the air temperature is above freezing. The temperature at the surface where rain falls can be higher than the coldest layer of air above.
The mesosphere is the layer of the atmosphere that exists between the stratosphere and the thermosphere. It contains the coldest parts of the Earth's atmosphere, reaching temperature depths of -90°C.
The Exosphere
mesosphere
The mesosphere is the coldest layer of the earth's atmosphere.
The coldest layer of the atmosphere is the exosphere (space). If you were to not count the exosphere, the coldest layer would be the mesosphere.
The mesosphere is the coldest layer of Earth's atmosphere. Temperatures in the mesosphere can drop as low as -90 degrees Celsius (-130 degrees Fahrenheit) due to its altitude and the thinness of the air molecules.
thermosphere
The Exosphere
The Exosphere
The coldest layer of the Earth is the lithosphere, which includes the Earth's crust and the upper part of the mantle. Temperatures in the lithosphere increase with depth, but it is still the coldest layer compared to the inner core, outer core, and lower mantle.