<P> The rest of North India, including the Indo - Gangetic Plain and Madhya Pradesh almost never receives snow . Temperatures in the plains occasionally fall below freezing, though never for more than one or two days . Winter highs in Delhi range from 16 to 21 ° C (61 to 70 ° F). Nighttime temperatures average 2--8 ° C (36--46 ° F). In the plains of Punjab, lows can fall below freezing, dropping to around − 3 ° C (27 ° F) in Amritsar . Frost sometimes occurs, but the hallmark of the season is the notorious fog, which frequently disrupts daily life; fog grows thick enough to hinder visibility and disrupt air travel 15--20 days annually . In Bihar in middle of the Ganges plain, hot weather sets in and the summer lasts until the middle of June . The highest temperature is often registered in May which is the hottest time . Like the rest of the north, Bihar also experiences dust - storms, thunderstorms and dust raising winds during the hot season . Dust storms having a velocity of 48--64 km / h (30--40 mph) are most frequent in May and with second maximum in April and June . The hot winds (loo) of Bihar plains blow during April and May with an average velocity of 8--16 km / h (5--10 mph). These hot winds greatly affect human comfort during this season . Rain follows . The rainy season begins in June . The rainiest months are July and August . The rains are the gifts of the southwest monsoon . There are in Bihar three distinct areas where rainfall exceeds 1,800 mm (71 in). Two of them are in the northern and northwestern portions of the state; the third lies in the area around Netarhat . The southwest monsoon normally withdraws from Bihar in the first week of October . Eastern India's climate is much milder, experiencing moderately warm days and cool nights . Highs range from 23 ° C (73 ° F) in Patna to 26 ° C (79 ° F) in Kolkata (Calcutta); lows average from 9 ° C (48 ° F) in Patna to 14 ° C (57 ° F) in Kolkata . In Madhya Pradesh which is towards the south - western side of the Gangetic Plain similar conditions prevail albeit with much less humidity levels . Capital Bhopal averages low of 9 ° C (48 ° F) and high of 24 ° C (75 ° F). </P> <P> Frigid winds from the Himalayas can depress temperatures near the Brahmaputra River . The Himalayas have a profound effect on the climate of the Indian subcontinent and the Tibetan plateau by preventing frigid and dry Arctic winds from blowing south into the subcontinent, which keeps South Asia much warmer than corresponding temperate regions in the other continents . It also forms a barrier for the monsoon winds, keeping them from travelling northwards, and causing heavy rainfall in the Terai region instead . The Himalayas are indeed believed to play an important role in the formation of Central Asian deserts such as the Taklamakan and Gobi . The mountain ranges prevent western winter disturbances in Iran from travelling further east, resulting in much snow in Kashmir and rainfall for parts of Punjab and northern India . Despite the Himalayas being a barrier to the cold northerly winter winds, the Brahmaputra valley receives part of the frigid winds, thus lowering the temperature in Northeast India and Bangladesh . The Himalayas, which are often called "The Roof of the World", contain the greatest area of glaciers and permafrost outside of the poles . Ten of Asia's largest rivers flow from there . The two Himalayan states in the east, Sikkim and Arunachal Pradesh, receive substantial snowfall . The extreme north of West Bengal centred on Darjeeling experiences snowfall, but only rarely . </P> <P> In South India, particularly the hinterlands of Maharashtra, parts of Karnataka, and Andhra Pradesh, somewhat cooler weather prevails . Minimum temperatures in western Maharashtra and Chhattisgarh hover around 10 ° C (50 ° F); in the southern Deccan Plateau, they reach 16 ° C (61 ° F). Coastal areas--especially those near the Coromandel Coast and adjacent low - elevation interior tracts--are warm, with daily high temperatures of 30 ° C (86 ° F) and lows of around 21 ° C (70 ° F). The Western Ghats, including the Nilgiri Range, are exceptional; lows there can fall below freezing . This compares with a range of 12--14 ° C (54--57 ° F) on the Malabar Coast; there, as is the case for other coastal areas, the Indian Ocean exerts a strong moderating influence on weather . The region averages 800 millimetres (31 in) per year, most of which falls between October and December . The topography of the Bay of Bengal and the staggered weather pattern prevalent during the season favours the northeast monsoon, which has a tendency to cause cyclones and hurricanes rather than steady precipitation . As a result, the coast is hit by what can mildly be termed as inclement weather almost every year between October and January . </P> <P> Summer in northwestern India starts from April and ends in July, and in the rest of the country from March to May . The temperatures in the north rise as the vertical rays of the Sun reach the Tropic of Cancer . The hottest month for the western and southern regions of the country is April; for most of North India, it is May . Temperatures of 50 ° C (122 ° F) and higher have been recorded in parts of India during this season . Another striking feature of summer is the Loo (wind). These are strong, gusty, hot, dry winds that blow during the day in India . Direct exposure to these winds may be fatal . In cooler regions of North India, immense pre-monsoon squall - line thunderstorms, known locally as "Nor'westers", commonly drop large hailstones . In Himachal Pradesh, Summer lasts from mid April till the end of June and most parts become very hot (except in alpine zone which experience mild summer) with the average temperature ranging from 28 ° C (82 ° F) to 32 ° C (90 ° F). Winter lasts from late November till mid March . Snowfall is generally common in alpine tracts that are above 2,200 metres (7,218 ft), especially those in the higher - and trans - Himalayan regions . Near the coast the temperature hovers around 36 ° C (97 ° F), and the proximity of the sea increases the level of humidity . In southern India, the temperatures are higher on the east coast by a few degrees compared to the west coast . </P>

Who had said that india has all types of climates of the world