Jagny-sous-BoisJagny-sous-Bois is a commune in the Val-d'Oise department and Île-de-France region of France.WWW jagny-sous-bois.frGeographyClimateJagny-sous-Bois has an oceanic climate. The average annual temperature in Jagny-sous-Bois is. The average annual rainfall is with October 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 Jagny-sous-Bois was on 25 July 2019; the coldest temperature ever recorded was on 17 January 1985.