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.
The temperatures are highest on average in July, at approximately , and lowest in January, at approximately . The highest temperature ever observed in Montmélian was  on 7 July 2015; the coldest temperature ever recorded was  on 27 November 2005.