Metro

Temperatures will plummet later Sunday thanks to a cold front

Wind gusts might exceed 30 miles per hour in some areas on Sunday.
National Weather Service
Wind gusts could exceed 30 miles per hour in some areas on Sunday. Above: A list of forecast wind gust speeds.

Sunday started off balmy in Boston — temperatures at Logan Airport peaked at 50 before sunrise.

If you’re expecting things to warm up, though, you’re out of luck. By the time sundown comes, temperatures will start falling, dipping into the 20s in some spots overnight, according to Lenore Correia of the National Weather Service. The forecast low in Boston is 30. Wind chills could fall into the teens, she said.

The warm start is a surprise; the average high temperature in Boston for late November is 48, Correia said.

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Winds from the west and a cold front, which moved into the region Saturday night, are bringing in colder air.

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Wind gusts in some areas will exceed 30 miles per hour, the weather service said, but that’s normal for this time of year, Correia said.

Highs on Monday and Tuesday will be closer to average, in the mid- to high-40s, with mostly sunny skies, according to the weather service.

Wednesday will be delightfully warm. Temperatures should hit the mid-50s with few clouds, the weather service said. Don’t get too excited: That’s the exception, not the rule, for the rest of the week.

Sean Smyth can be reached at sean.smyth@globe.com. Follow him on Twitter @smythsays.