Amritsar district is one of the twenty three districts that make up the Indian state of Punjab. Located in the Majha region of Punjab, the city of Amritsar is the headquarters of this district. As of 2011, it is the second most populous district of Punjab (out of 23), after Ludhiana. The control of Amritsar was fully taken by Maharaja Ranjit Singh by 1802, after bringing all the Misls under his control. He also fortified Gobindgarh fort along modern lines. During British Rule Amritsar District was part of Lahore Division and was administratively subdivided into 3 tehsils namely - Amritsar, Ajnala and Tarn Taran. However, as part of the partition of India in 1947 Amritsar district was separated from the rest of the division and awarded to India. However, some parts like Patti & Khem Karan falls in the Lahore District but due to partition, these towns became the part of Amritsar District. During the partition period, the Muslim population of the district, some 46%, left for Pakistan while Hindus and Sikhs from West Punjab in newly created Pakistan migrated in the opposite direction. The Sikhs and Hindus (37% and 15.38%) were a majority in the Amritsar district constituting about 52% of the population together before the partition of 1947. Amritsar has a semiarid climate, typical of Northwestern India and experiences four seasons primarily: winter season (December to March, when temperatures can drop to , summer season (April to June) where temperatures can reach , monsoon season (July to September) and post-monsoon season (October to November). Annual rainfall is about . The lowest recorded temperature is , was recorded on 9 December 1996 and the highest temperature, , was recorded on 9 June 1995. The official weather station for the city is the civil aerodrome at Rajasansi. Weather records here date back to 15 November 1947. According to the 2011 census Amritsar district has a population of 2,490,656, roughly equal to the nation of Kuwait or the US state of Nevada. The number of literates in Amritsar district is 1,684,770 (67.