short autumn, and winter. The summer in the delta region is noted for excessive humidity, with the highest day temperature ranging from 38 °C (100 °F) to 45 °C (113 °F). In early summer brief squalls and thunderstorms known as Kalbaisakhi or Norwesters, often occur. In the year 2018 Halisahar recorded strongest kalbaisakhi in which storm was about 100 km/h and 51 mm of rain on 13 May. Halisahar receives the Bay of Bengal branch of the Indian Ocean monsoon that moves in the northwest direction. Winter (December–January) is mild with average minimum temperatures of 19 °C (66.2 °F). A cold and dry northern wind blows in the winter, substantially lowering the humidity level. Demographics Population As per the 2011 Census of India, Halisahar had a total population of 124,939, of which 65,467 (52%) were males and 59,472 (48%) were females. Population below 6 years was 11,138. The total number of literates in Halisahar was 100,560 (88.36% of the population over 6 years). As of 2001, India census, Halisahar had a population of 124,479. Males constitute 54% of the population and females 46%. Halisahar has an average literacy rate of 76%, higher than the national average of 59.5%: male literacy is 81%, and female literacy is 70%. In Halisahar, 10% of the population is under 6 years of age. Kolkata Urban Agglomeration The following Municipalities, Census Towns and other locations in Barrackpore subdivision were part of Kolkata Urban Agglomeration in the 2011 census: Kanchrapara (M), Jetia (CT), Halisahar (M), Balibhara (CT), Naihati (M), Bhatpara (M), Kaugachhi (CT), Garshyamnagar (CT), Garulia (M), Ichhapur Defence Estate (CT), North Barrackpur (M), Barrackpur Cantonment (CB), Barrackpore (M), Jafarpur (CT), Ruiya (CT), Titagarh (M), Khardaha (M), Bandipur (CT), Panihati (M), Muragachha (CT) New Barrackpore (M), Chandpur (CT), Talbandha (CT), Patulia (CT), Kamarhati (M), Baranagar (M), South Dumdum (M), North Dumdum (M), Dum Dum (M), Noapara (CT), Babanpur (CT), Teghari (CT), Nanna (OG), Chakla (OG), Srotribati (OG) and Panpur (OG). Infrastructure As per the District Census Handbook 2011, Halisahar Municipal city covered an area of 8.29 km2. Amongst the civic amenities it had 163.7 km of roads and open drains. Amongst the medical facilities It had 1 charitable medical facility and 66 medicine shops. Amongst the educational facilities It had 64 primary schools, 1 middle school, 4 secondary schools, 6 senior secondary schools and 7 non-formal education centres. Amongst the social, recreational and cultural facilities it