Boston, Massachusetts – St. Patrick’s Day week across Massachusetts could feel more like mid-winter as a surge of colder Canadian air raises the risk of late-season snow just days before the official start of spring.
According to the NOAA Climate Prediction Center’s 8–14 day outlook, the period from March 15 through March 21 favors above-normal precipitation across New England, while much of the eastern United States trends below normal temperatures. The pattern develops as a large cold boundary drops south from Canada, stretching from Maine through the Great Lakes and down toward Georgia and northern Florida, funneling colder air along the East Coast.
That setup places cities including Boston, Worcester, Springfield, and Lowell in a corridor where incoming storm systems could interact with colder air, increasing the potential for late-season snow or mixed precipitation during St. Patrick’s Day week.
Travel impacts could emerge along major routes such as Interstate 90 (Mass Pike), Interstate 93, and Interstate 95, especially if precipitation arrives during overnight or early morning hours when road temperatures are colder. Event planners preparing for Boston’s St. Patrick’s Day celebrations and parades may want to watch for updates if storms begin to organize along the coast.
The timing stands out as daylight saving time begins this weekend, yet winter conditions may linger across the Northeast even as the first day of spring arrives later that week.
Forecasters will refine storm timing and snowfall potential over the coming days, and additional advisories could follow if the colder pattern locks into place across New England.
