Cloudy nights are warmer than the nights with clean sky. Explain

In clear nights there is no cloud cover to reflect heat back to the surface. Heat escapes into space.But when clouds are there, the clouds help keep the heat from leaving our atmosphere therefore keeping the night warm where as on a clear night there is nothing there to stop heat from escaping.When it is cloudy the heat in the atmosphere is held in.The cloudy nights have a greenhouse effect and trap heat.Clouds trap heat being reflected from the earth. The heat radiation lost from the clear night it just escapes into space.
Thanks & Regard
Aarti Gupta
askiitians Faculty

On a cloudless night the heat escapes in the atmosphere which results in a sudden decrease in temperature which may result in a frost. But during a cloudy night the clouds reflects back the heat which tries to escape in the atmosphere.