Mussoorie is a hill station and a municipal board in the Dehradun District of the Indian state of Uttarakhand. It is about 35 kilometres (22 mi) from the state capital of Dehradun and 290 km (180 mi) north of the national capital of New Delhi. The hill station is in the foothills of the Garhwal Himalayan range. The adjoining town of Landour, which includes a military cantonment, is considered part of 'greater Mussoorie', as are the townships of Barlowganj and Jharipani.
Mussoorie is at an average altitude of 2,005 metres (6,578 ft). To the northeast are the Himalayan snow ranges, and to the south, the Doon Valley and Shiwalik ranges. The second highest point is the original Lal Tibba in Landour, with a height of over 2,275 metres (7,464 ft). Mussoorie is popularly known as The Queen of the Hills.
Mussoorie has a fairly typical subtropical highland climate (Köppen Cwb) for the mid-altitude Himalaya. Summers are warm and very wet, with July and August averaging approximately 660 millimetres or 25.98 inches of rain per month due to orographic lift of the extremely moist monsoonal air. The pre-monsoon seasons in April and May is warm to very warm and generally dry and clear, giving way to heavy rainfall from mid-June, while the post-monsoon season is also dry and clear but substantially cooler. In winter, rainfall is a little more frequent than in the pre-and post-monsoon seasons, and the general weather cool and partly cloudy. Mussoorie usually receives a few spells of snowfall in December, January and February, although the number of snowy days has come down in recent years due to a combination of local and global factors, such as deforestation, construction activity and global warming. Between October to February the town shows the rare 'winterline' phenomenon.