Metro

An hour-by-hour look at the frigid weather in store for New Year’s Eve in Boston

Suzanne Kreiter/Globe staff/file

As Bostonians ring in 2018, temperatures will be in the single digits, and, factoring in the effect of the wind, the weather will have a subzero feel.

Earlier parts of the day on New Year’s Eve won’t be much warmer, according to forecasts from the National Weather Service.

When First Night festivities kick off in Boston at noon Sunday, temperatures will be in the low-to-mid teens and the windchill will be just below zero degrees. Those figures will hardly budge for the rest of the afternoon.

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By the time fireworks start over Boston Common at 7 p.m., the mercury will have fallen below 10 degrees, and it will feel like around minus 7 degrees.

Those who stay out until the city’s bars close will step and stumble out into low single digit temperatures, and it will feel like it’s about minus 12 degrees.

Throughout the day and into the early morning hours, winds are expected to blow anywhere from about 10 to 13 miles per hour, though gusts will range from about 20 to 25 miles per hour.

The only thing falling from the sky should be, potentially, confetti. Forecasters don’t expect any precipitation between midday Sunday and Monday morning.

The hourly weather predictions could shift slightly as the weekend goes on, but forecasters say they don’t expect any significant changes between now and Sunday.

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Even if the outlook fluctuates somewhat, they’re confident that: “It’s going to be bitterly cold outside pretty much anywhere in southern New England,” said Kim Buttrick, a meteorologist at the National Weather Service in Taunton.

And, for those ushering in 2018 outside of Boston, “It will be slightly colder in the suburbs, particularly north and west of the city,” she said.

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Matt Rocheleau can be reached at matthew.rocheleau@globe.com. Follow him on Twitter @mrochele.