The 'Superstorm' hit the East Coast of the US on Monday, October 29, killing more than 100 people and knocking out power for thousands across the region.
(Pictured above: Christopher Walker in a scene from 'Seven Psychopaths')
In an interview with Page Six, Walken revealed that he went for days without any running water or electricity at his home.
"I don't have an iPad, I don't have a cellphone, I don't have a computer. I'm up in Connecticut. So when the trees went down, I was in the dark," Walken revealed.
He continued: "I was like a caveman for eight days! The lights went out last Monday, and that meant no water, no phones, no light! And this time of year, it gets dark at about 4:30, and it got cold in the house. So it was just me and the cat."
Walken also revealed that his wife Georgianne Walken was luckily spared from facing the brunt of the storm.
"Happily, my wife was in another place. And I said, 'Don't come here, because there's barely enough stuff. Stay put'," he recalled.
"The minute I went to bed, the cat would get under the covers and never move. Just a little bit of heat."
Power has since been restored to much of the region, but thousands have been left with property damage to their homes.
Watch a trailer for Seven Psychopaths below: