Montmélian (; Savoyard: Monmélyan) is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. Montmélian station has rail connections to Grenoble, Modane, Bourg-Saint-Maurice and Chambéry.
Montmélian has a humid subtropical climate (Köppen climate classification Cfa) closely bordering on an oceanic climate (Cfb). The average annual temperature in Montmélian is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in July, at around , and lowest in January, at around . The highest temperature ever recorded in Montmélian was on 7 July 2015; the coldest temperature ever recorded was on 27 November 2005.