Les Belleville has a humid continental climate (Köppen climate classificationDfb). The average annual temperature in Les Belleville is 6.5 °C (43.7 °F). The average annual rainfall is 926.3 mm (36.47 in) with December as the wettest month. The temperatures are highest on average in July, at around 15.1 °C (59.2 °F), and lowest in January, at around −1.3 °C (29.7 °F). The highest temperature ever recorded in Les Belleville was 32.3 °C (90.1 °F) on 7 July 2015; the coldest temperature ever recorded was −24.0 °C (−11.2 °F) on 12 January 1987.
Climate data for Les Belleville (Saint-Martin-de-Belleville, altitude 1443m,[5] 1991–2020 normals, extremes 1983–present)