Giron, AinGiron is a commune in the Ain department in eastern France.WWW mairie-giron.frGeographyClimateGiron has an oceanic climate. The average annual temperature in Giron 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 Giron was on 13 August 2003; the coldest temperature ever recorded was on 12 January 1987.