Question

Describe temperature conditions during the winter season.

Answer 1

Hint: Heat provided by the sun is the main driving force of the phenomena we refer to as Seasons because the angle of impact of sunrays varies throughout the year because of earth's tilt on its axis.

Complete answer:
The reason our planet experiences seasons is because the earth’s rotation axis is not at a right angle with the plane of its revolution around the sun. Because of this, the angle of the sun's rays with respect to the surface changes throughout the year resulting in different temperatures in different seasons.
The tilt of Earth’s axis is $23.5$ degrees, which results in a different angle of incident of sun’s rays in hemispheres. During the months of November to February, the southern hemisphere receives more direct sunlight as compared to the Northern Hemisphere, where the sun appears to be lower in the sky. Because of it, solar energy (heat and light) spreads over a larger area.
This results in lower temperatures in the northern hemispheres during the months of November to February, of which December and January are the coldest. These temperatures are more apparent in the area which is not in the tropics. For example, Delhi is much colder than Chennai during the month of December.
The Winter season can be characterized as short days and long nights, giving less time for the surface to heat up during the day and losing most of this heat during the night.

Note: The temperature in Chennai during the season of winter is around 25 degrees Celsius, while in northern India it stays in the range of 10-15 degree Celsius.