Climate Giromagny has an
oceanic climate (
Köppen climate classification Cfb). The average annual temperature in Giromagny 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 Giromagny was on 24 July 2019; the coldest temperature ever recorded was on 20 December 2009. {{Weather box ==Population==