CeillacCeillac is a commune in the Hautes-Alpes department in southeastern France.WWW ceillac.comGeographyClimateCeillac has a humid continental climate. The average annual temperature in Ceillac 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 Ceillac was on 27 June 2019; the coldest temperature ever recorded was on 10 February 1986.