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Bitter wind chill makes way for coldest night of the season

Commuters in Boston walked down Clarendon Street on a cold December 2018 day.
Commuters in Boston walked down Clarendon Street on a cold December 2018 day. (Jonathan Wiggs /Globe Staff)

Break out that puffy black coat — it’s going to be a bitterly cold day.

The National Weather Service is predicting temperatures in the 20s across Massachusetts, but winds of 15 to 25 miles per hour will pack on a wind chill factor that will make it feel more like the teens and single digits.

Forecasters note that while Friday will be sunny, the low January sun angle will prevent those rays from providing much warmth.

Friday night is also on track to be one of the coldest nights of the early winter season, according to the weather service. Temperatures will be in the low teens in Boston and along the South Shore, Cape and Islands, and single digits in other areas of the state.

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The wind chill will make those temperatures even lower; high terrain areas could see temperatures anywhere from zero to minus 5 degrees with single digits elsewhere in the state.

“[It’s] not record breaking cold but noticeably colder than normal,” the weather service said.

The chill will continue into Saturday morning, forecasters said, with temperatures only rising to the 20s by midday.

Abbi Matheson can be reached at abbi.matheson@globe.com. Follow her on Twitter at @AbbiMatheson .