Douglas is currently a category 3 hurricane, with maximum sustained winds near 115 mph.
The official intensity forecast calls for steady weakening during the next couple days as Douglas nears the Hawaiian Islands.
The system is expected to be a category 1 hurricane or tropical storm approaching the eastern end of the state late Saturday night or Sunday.
Strong winds, dangerous surf, and heavy rainfall could affect portions of the state.
The storm approaches as Hawaii grapples with increasing COVID-19 numbers. On Friday, the state reported 60 newly confirmed cases, its highest single-day increase since the pandemic began.
The Associated Press contributed to this report.