MANCHESTER, N.H. —

Winter is settling in on New Hampshire's highest peak.

On Tuesday, Mount Washington saw temperatures drop to 13 below zero.

Luckily, the Mount Washington Observatory's cat, Nimbus, is ready for the cold.

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The observatory shared a photo of Nimbus, posing with his snow gear, including boots, a sweater, fleece and a vintage snowsuit.

Researchers at the summit also took part in an annual holiday tradition.

According to the observatory, the highest Christmas tree in New England is now set up at Mount Washington State Park in the rotunda area.

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