Portland, Maine – Drivers across Maine and New Hampshire could face rapidly worsening travel conditions within hours as steady snow spreads in this evening, with heavier bands expected overnight and into the Wednesday morning commute.
According to the National Weather Service in Gray, a Winter Weather Advisory remains in effect from 7 p.m. Tuesday until 4 p.m. Wednesday for much of western, central, and southern Maine, along with central and northern New Hampshire. Snow accumulations of 3 to 6 inches are expected across interior portions of Maine and New Hampshire, while coastal and midcoast Maine, including Knox, Lincoln, Waldo, and Sagadahoc counties, could see 4 to 7 inches.
Snow develops this evening and becomes more persistent overnight. Periods of moderate to heavy snowfall are possible, especially where snowbands set up, leading to rapid accumulation and visibility dropping below a half mile at times. Untreated roads could quickly become snow-covered across major routes including I-95, I-295, Route 1, and inland highways connecting Portland, Augusta, Lewiston, Auburn, Waterville, and Bangor-adjacent corridors.
In New Hampshire, snow begins earlier, affecting areas from Manchester and Nashua north through Concord, Plymouth, and the White Mountains, with impacts expected for both the Tuesday evening and Wednesday morning commutes.
State transportation crews will be treating roads, but motorists are urged to slow down, allow extra stopping distance, and avoid unnecessary travel during heavier snowfall. Conditions gradually improve late Wednesday afternoon, though slick roads may linger after snow ends. Additional advisories remain in effect as snow bands shift across the region.
