  We report an above-room-temperature ferromagnetic state realized in a
proximitized Dirac semimetal, which is fabricated by growing typical Dirac
semimetal Cd$_3$As$_2$ films on a ferromagnetic garnet with strong
perpendicular magnetization. Observed anomalous Hall conductivity with
substantially large Hall angles is found to be almost proportional to
magnetization and opposite in sign to it. Theoretical calculations based on
first-principles electronic structure also demonstrate that the Fermi-level
dependent anomalous Hall conductivity reflects the Berry curvature originating
in the split Weyl nodes. The present Dirac-semimetal/ferromagnetic-insulator
heterostructure will provide a novel platform for exploring Weyl-node transport
phenomena and spintronic functions lately proposed for topological semimetals.
