The commune has a station, Bellegarde, which is located at the junction of three railway lines and has regular service to various destinations in France and Switzerland.
Valserhône has an oceanic climate (Köppen climate classificationCfb). The average annual temperature in Valserhône is 11.1 °C (52.0 °F). The average annual rainfall is 1,184.6 mm (46.64 in) with December as the wettest month. The temperatures are highest on average in July, at around 20.4 °C (68.7 °F), and lowest in January, at around 2.1 °C (35.8 °F). The highest temperature ever recorded in Valserhône was 39.5 °C (103.1 °F) on 13 August 2003; the coldest temperature ever recorded was −17.0 °C (1.4 °F) on 5 February 2012.
Climate data for Bellegarde-sur-Valserine, Valserhône, Ain, France, Alt. : 350 m, (1991-2020 averages, extremes 1994−present)
^"Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022. Archived from the original on 28 June 2020. Retrieved 22 November 2022.