Valromey-sur-SéranValromey-sur-Séran is a commune in the Ain department in eastern France. The municipality was established on 1 January 2019 by merger of the former communes of Belmont-Luthézieu, Lompnieu, Sutrieu and Vieu.WWW valromey-sur-seran.frGeographyClimateValromey-sur-Séran has an oceanic climate. The average annual temperature in Valromey-sur-Séran 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 Valromey-sur-Séran was on 31 July 2022; the coldest temperature ever recorded was on 7 February 2020.