Islamabad's micro-climate is regulated by three artificial reservoirs: Rawal, Simli, and Khanpur Dam. The latter is located on the Haro River near the town of Khanpur, about from Islamabad. Simli Dam is north of Islamabad. of the city consists of Margalla Hills National Park. Loi Bher Forest is situated along the Islamabad Highway, covering an area of . The highest monthly rainfall of was recorded during July 1995. Winters generally feature dense fog in the mornings and sunny afternoons. In the city, temperatures stay mild, with snowfall over the higher-elevation points on nearby hill stations, notably Murree and Nathia Gali. The temperatures range from in January to in June. The highest recorded temperature was on 23 June 2005 while the lowest temperature was on 17 January 1967. The city has recorded snowfall. On 23 July 2001, Islamabad received a record-breaking of rainfall in just 10 hours. It was the heaviest rainfall in Islamabad in the past 100 years and the highest rainfall in 24 hours as well.