India, being a vast country does not fit into any one zone. Situated roughly between 8° N and 37° N Latitude, it occupies a large area of South Asia. It can be divided mainly into four climatic zones namely Alpine, Subtropical, Tropical and Arid. Alpine Zone
Sub Tropical: This zone is prevalent in most of the northern part of India. It can be called as the typical Indian climate. Summers are hot and wet while in winter temperature may drop down to freezing point in higher ranges. Rainfall is common in summer season whereas winters are cold and dry.

Arid: High temperature and low rainfall are marked features of this climatic zone. It is prevalent in western part of the country and includes large part of Rajasthan. The temperature in this zone may shoot up to as high as 50 �C in summer.

Cycle of seasons

though divided into different climatic zones, India seems to be unified by primarily four seasons - winter, summer, Advancing Monsoon and Retreating Monsoon.

Winter: December to February is the wintertime in almost all of India. At this time of the year, days are cold with average temperature of 10-15C, but it can drop down to below 0C in some higher ranges of northern India. Normally winters are dry in northern India. In Southern part, the temperature difference is not so marked due to moderating effect of Indian Ocean, Bay of Bengal and Arabian Sea.

Summer: March, April, May and June are the summer months in India. It is a time period when rays of the sun fall vertically on Indian subcontinent. The average temperature is around 32 c but in western region the maximum temperature can be far above the average. The Hot wind, known, as 'Loo' is the marked feature of summers in northern India.
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Advancing Monsoon: It is the time period when India gets major part of its share of rain. Months of June, July, August and September form the core of Advancing Monsoon in almost all parts of country.
Retreating Monsoon: This season starts, when monsoon after drenching all of India, begins to retreat. With the month of September, rainfall began to decrease and as we approach November, the monsoon is completely gone from major part of India, except for Tamil Nadu and some other southern states, which also receive rain from Western Disturbance.

India, a union of states, is a Sovereign, Secular, Democratic Republic with a Parliamentary system of Government. The Indian polity is governed in terms of the Constitution, which was adopted by the Constituent Assembly on 26 November 1949 and came into force on 26 November 1950. 
The President is the constitutional head of Executive of the Union. Real executive power vests in a Council of Ministers with the Prime Minister as head. Article 74(1) of the Constitution provides that there shall be a Council of Ministers headed by the Prime Minister to aid and advise the President who shall, in exercise of his functions, act in accordance with such advice. The Council of Ministers is collectively responsible to the Lok Sabha, the House of the People.
In the states, the Governor, as the representative of the President, is the head of Executive, but real executive power rests with the Chief Minister who heads the Council of Ministers.