This weekend’s winter storm will deliver a prolonged period of snowfall across Massachusetts, with forecasts calling for up to 20 inches over roughly 36 hours. The system is expected to move into southern New England on Sunday, reach peak intensity Sunday evening into Sunday night, and gradually depart Monday into early Tuesday. Boston and Worcester should see the first measurable flakes between about 11 a.m. and 1 p.m. on Sunday, with the southernmost and coastal areas seeing mixed precipitation at times. Officials warn of rapidly deteriorating travel conditions during the storm’s peak and prolonged cold that will limit any melting afterward.
Key takeaways
- Forecasted total snowfall: up to 20 inches across portions of Massachusetts by Monday night; most areas expected to receive between 12 and 20 inches.
- Duration: roughly a 36-hour event from Sunday late morning through Monday night, with snow ending statewide by early Tuesday morning.
- Timing for Boston/Worcester: initial flakes expected between 11 a.m. and 1 p.m. Sunday; heaviest snow 8 p.m.–midnight Sunday.
- Peak rates: bands could produce 1–2+ inches per hour during the heaviest periods, especially Sunday evening along southern New England.
- Coastal differences: South Coast, Cape Cod and the Islands may experience rain or mixed precipitation and lower totals compared with inland areas.
- Cold aftermath: temperatures are forecast to remain below freezing through next weekend, preventing significant melt.
Background
The storm developing offshore is tapping Atlantic moisture while a cold air mass remains over New England, producing a long-duration snowfall across the region. Such setups—moisture from the ocean combined with a slow-moving center—frequently produce heavy, multi-day snow in southern New England, including banded bursts that create sharp local contrasts. Emergency managers and transportation agencies typically prepare for layered impacts: initial light snow, a period of rapid accumulation during the storm’s core, then scattered bands as the system moves away.
Local infrastructure and services are sensitive to timing: a midday-to-evening onset increases daytime travel exposure before peak accumulation arrives. Coastal areas often see a more complicated mix of rain, sleet or wet snow when a coastal front establishes itself; that boundary will affect totals along the South Coast, Cape and Islands. Forecasters updated the forecast on January 23, 2026, and emphasize that fine-scale placement of heavy bands will determine final totals by town.
Main event
Sunday morning into midday (8 a.m.–2 p.m.) will begin with scattered flurries and then a northward-moving shield of precipitation. The first measurable snow is expected in Boston and Worcester between about 11 a.m. and 1 p.m.; along the Massachusetts–New Hampshire border, the onset shifts later to roughly noon–2 p.m. Intensity during these hours should be light to moderate, producing little accumulation at first.
From about noon to 3 p.m. Sunday the storm will cover all of southern New England. Snow should start light and trend toward moderate; most places will see only a coating to an inch or so in this span, with up to 2 inches possible well to the southwest. Roads will begin to worsen but are not yet at the most hazardous stage.
By Sunday afternoon into the evening (3 p.m.–8 p.m.) the storm reaches its “teeth.” Visibility will fall and snowfall rates may reach 1 inch or more per hour in heavier bands. Travel conditions will deteriorate rapidly; some mixing with rain or ice is possible over the Islands depending on the coastal temperature gradient.
The peak period occurs Sunday night (8 p.m.–midnight) when the heaviest, most widespread snow is likely. Heavier bands could produce 1–2+ inches per hour, with visibility under a quarter mile in the worst stretches. Winds will gust along the coastline and a coastal front near I-95 will create warmer, wetter snow east of that boundary. Southern New England accumulations during this peak are expected to reach 6–12 inches by midnight in many areas.
Overnight into Monday morning (12 a.m.–7 a.m.) the steady heavy snow will begin to break into more scattered bands as a dry slot advances from the south and west. This drying will temporarily reduce intensity across portions of Connecticut, Rhode Island and southeastern Massachusetts, and the rain/mix line may push as far north as the Plymouth area. Most of the state will still be in the heavy-snow tally, with projected totals of 10–16 inches across many locations except for the far South Coast, Cape and Islands.
Monday daytime into evening (7 a.m.–midnight) sees the system make its closest approach and then swing east. Snow will become variable—moderate in some zones, light or absent in others—but isolated ocean-enhanced bands near the coast may produce localized heavy snowfall. By late Monday into Monday night much of central and western Massachusetts will see the last bands; cleanup operations during the day Monday are reasonable, though an additional coating to 2 inches is possible. By early Tuesday (12 a.m.–7 a.m.) the storm should be finished across the region, leaving lingering cold.
Analysis & implications
The multi-phase nature of this event—initial light snow, a prolonged core of heavy bands, then scattered follow-up—means impacts will be distributed across different travel periods. Commuters on Sunday afternoon and evening face the highest immediate risk from quickly declining visibility and rapidly accumulating snow. Emergency and public works operations will be stretched across a 36-hour window, complicating snow removal logistics and road treatments that usually rely on cycles of plowing and salt application.
Coastal temperature contrasts introduced by a coastal front will create sharp differences in accumulation near I-95 and along the South Shore. Areas east of that boundary may see wetter, heavier snow or a rain/sleet component, reducing totals but increasing the risk of slick, frozen surfaces once temperatures fall. Conversely, colder inland sections are likely to record the highest totals, with snow that compacts into heavy drifts and makes secondary roads difficult to pass.
Economically, extended closures and hazardous travel can affect retail, transit, and supply chains, especially given the storm’s timing over a weekend and into Monday. Prolonged subfreezing temperatures through the following week (forecast to remain below 32°F) will limit natural melt, extending impacts on sidewalks, secondary roads and parking lots and increasing the demand for deicing resources. Municipalities should prioritize arterial routes and hospital/first-responder access while advising residents to avoid nonessential travel during peak hours.
Comparison & data
| Timeframe | Intensity | Typical accumulation by period |
|---|---|---|
| Sun 8 a.m.–noon | Light–moderate | Scattered coatings |
| Sun noon–3 p.m. | Light → moderate | Coatings to ~1″, up to 2″ southwest |
| Sun 3 p.m.–8 p.m. | Moderate → heavy (1″+/hr possible) | Widespread 3–6+” by 8 p.m. |
| Sun 8 p.m.–midnight | Heavy (1–2+”/hr) | 6–12″ across southern New England |
| Mon 12 a.m.–7 a.m. | Variable; steady → scattered | 10–16″ in most areas; less at coast |
| Mon day–night | Variable; ocean-enhanced bands | 12–20″ by end of day (except extreme SE) |
The table summarizes forecast timing and accumulation guidance; local amounts will vary with the placement of heavy bands and the position of the coastal front. Planners should use the higher end of guidance for resource staging and motorists should assume slower speeds and limited visibility during peak bands.
Reactions & quotes
State and local agencies urged caution and preparation ahead of peak snowfall and prolonged cold.
“Prepare for periods of heavy snow and difficult travel across the region.”
National Weather Service (official)
The NWS guidance emphasizes the potential for heavy, high-rate snowfall at times and warns that travel could become hazardous quickly during peak hours.
“Road conditions will deteriorate rapidly Sunday evening; avoid nonessential travel if possible.”
Massachusetts Department of Transportation (state agency)
Transportation officials highlighted the strain on plows and anti-icing operations during a long-duration event and asked drivers to allow extra travel time or delay trips.
“Localized bands could drop an inch or more per hour—spotty but intense bursts are likely.”
WBZ meteorology team (local media)
Local meteorologists noted the risk of sharply contrasting totals across short distances and encouraged residents to monitor updates as band placement changes.
Unconfirmed
- Exact northern extent of the rain/mix line beyond Plymouth is subject to change as the storm evolves and remains uncertain.
- Precise placement and timing of ocean-enhanced bands that could produce locally higher totals are not yet fixed.
- Final, town-by-town snowfall totals remain forecast estimates until observations are collected during and after the storm.
Bottom line
This storm is forecast as a long-duration, high-impact winter event for much of Massachusetts, with up to 20 inches possible and the worst travel expected Sunday evening into Sunday night. Coastal areas face mixed precipitation and lower totals in places, while inland communities are more likely to record the highest accumulations.
Residents should avoid nonessential travel during peak hours, plan for extended cleanup because subfreezing temperatures will limit melting, and watch local official updates for adjustments to the timing and band placement. Municipalities and emergency services should stage resources across a prolonged timeframe to manage plowing, treatment and response needs.