A Nor’easter is set to slam metro-area commuters with a wet wintery mix Tuesday morning, but the evening rush’s heavy rains could bring the most treacherous conditions, according to forecasters.

Roads from New York to Pennsylvania and Maine will be snarled by the nasty chilly weather blowing into the region — and drivers should stay vigilant on their later commutes, meteorologists warned Monday.

Tuesday evening’s commute in the city is expected to have the worst conditions of the day after hours of cold rainfall. Getty Images

“The morning commute could start to be wetter toward the tail end,” FOX Weather meteorologist Cody Braud told The Post. “Most of the early-morning commute will start dry or see some lighter rain. Likely will not be too many noticeable impacts until closer to 9 a

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