Temperatures have been running above average this week in Massachusetts, but a shift in the jet stream is setting the stage for colder conditions by Thanksgiving.
Tuesday and Wednesday will stay mild, with highs in the 50s and possibly low 60s as a ridge in the jet stream pulls warm southern air into the region. You might see a few sunny breaks Tuesday afternoon, but clouds will dominate. Rain moves in after 4 p.m. and continues through the night, with lows in the low 40s.
Wednesday will be the warmest day of the week, bringing scattered showers and highs in the upper 50s to near 60. Once the ridge moves east Wednesday night, a trough takes over, allowing colder air to spill into Massachusetts and drop temperatures.
Thanksgiving looks dry, cold, and windy. Highs will reach only the low 40s under a mix of sun and clouds. As the weekend nears, temperatures could fall even more, with highs struggling to get out of the 30s.
With this jet stream shift, New Englanders can expect a return to more typical November weather just in time for the holiday.
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