The Honolulu Star-Advertiser reports the money will keep the National Park Service facility staffed, its bathrooms open and its programs running for at least another week.
Pacific Historic Parks CEO Aileen Utterdyke called the gesture "excellent."
She runs a nonprofit organization that supports the operations of the memorial and the Park Service.
Tourism industry officials worry travelers will cancel their Hawaii vacations if the Pearl Harbor visitors' center closes.
Utterdyke says that would affect airlines and hotels and have a trickle-down effect.