Colorado records
Desert Nightsnake in Colorado
HarmlessHypsiglena chlorophaea

Yes. The Desert Nightsnake has been recorded in 2 Colorado counties. It is non-venomous (harmless). Pale gray with dark blotches, vertical pupils, and dark neck blotches.
Colorado counties with Desert Nightsnake records
2 listedSee the full Desert Nightsnake profile or all snakes in Colorado.