Tom Hiddleston Charmingly Takes Over Chicago Weather Broadcast, Blames Thor for Thunderstorms

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Some people say moisture and rising, unstable air is what causes thunderstorms -- but Tom Hiddleston knows better!

The 35-year-old Thor actor gave local Chicago weatherman Mike Caplan a run for his money on Thursday, when he appeared during the weather broadcast to help explain some of the strong storm patterns occurring in the area.

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"My brother from another mother has been misbehaving. The God of Thunder has been bringing his skill set to bear on the local weather today," Hiddleston joked, play-acting as his character Loki, half-brother to Thor.

"So there is a huge storm front coming in and all that means is that Chris Hemsworth has taken his hammer and he's smashed it on the surface of the sky, and it's going to rain a hell of a lot -- so good luck with that!"

Sure, Tom. That sounds scientific!

Hiddleston was visiting the station to promote his new Hank Williams biopic, I Saw the Light, in which he plays the famous crooner, opposite Elizabeth Olsen as Williams' first wife, Audrey.

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ET spoke to Olsen about the role and her intense on-screen chemistry with Hiddleston. "I would love to work with him again," she gushed. "He's such an incredible person. Anyone who's worked with him knows how disciplined and rigorous he is, and kind and respectful."

See what else Olsen had to say about her handsome co-star, as well as what she dishes on her famous twin sisters, in the video below.