Dry Air and Mild Temperatures Return to Boston

Boston

Dry air will return to eastern Massachusetts this week, bringing seasonably cool mornings and mild afternoons. Morning temperatures are expected to be in the 40s and 50s, with afternoon highs around 70 degrees for much of the region. A low-pressure system is forecast to pass well off the New England coastline on Wednesday, and current model trends show less rain than earlier anticipated, although a chance of light precipitation remains for parts of southeastern Massachusetts. Clearer and sunnier weather is expected from Thursday through Saturday, with Thursday likely the warmest day before a notable temperature drop over the weekend.

Key details

The overall pattern for the week will be dominated by drier air and relatively mild daytime temperatures. Skies will generally show filtered sunshine, producing a milky appearance across much of eastern and southeastern Massachusetts. Northern and western sections of the Boston area should see brighter skies and thinner cloud cover. Tuesday is expected to follow a similar trend to Monday.

Precipitation outlook

A low-pressure system is projected to track well offshore on Wednesday. As a result, model guidance has trended toward reduced rainfall for New England, but the system could still clip southeastern coastal areas with a few showers or light precipitation. For most communities in eastern Massachusetts, the week will be largely dry. The highest chance for any rain or sprinkles will be along the southeastern coastline on Wednesday.

Temperature pattern

Expect mornings in the 40s and 50s, which is typical for the season, while daytime highs hover near 70 degrees on many days. Thursday is forecast to be the warmest day of the period, with temperatures rising above the week’s average. A noticeable cooldown is expected over the weekend, with temperatures falling from Thursday’s peak.

Supporting information and timing

– Monday and Tuesday: Dry conditions, cool mornings, mild afternoons with filtered sun across much of eastern and southeastern Massachusetts. Brighter skies in northern and western suburbs of Boston.
– Wednesday: Low-pressure system passes well offshore. Current guidance favors limited precipitation, but a chance remains for light rain in southeastern coastal areas.
– Thursday through Saturday: Predominantly sunny conditions, warmer on Thursday, followed by a weekend temperature drop.

Local variations

Coastal spots and southeastern towns should watch for any stray showers on Wednesday due to the offshore low, while inland and northern/western neighborhoods of the Boston metro are more likely to maintain dry and brighter conditions throughout the week. The milky sky effect from thin clouds will be most noticeable where air remains drier but not cloud-free.

Background and context

This week’s pattern reflects a common setup in spring and early summer where drier continental air briefly moderates temperatures, producing cool mornings and comfortable afternoons. Offshore low-pressure systems can still influence coastal areas even when they remain well out to sea, which is why southeastern Massachusetts retains a slight risk for light precipitation despite the overall dry trend. The shift toward sunnier conditions later in the week will be driven by improving upper-level flow and a weakening of onshore moisture.

Practical considerations

Residents should plan for cool starts to the day and mild afternoons. A light jacket or sweater is likely needed in the morning, while afternoons will be comfortable for outdoor activities. Coastal communities should keep a weather-ready mindset for Wednesday if they have outdoor plans near the shore, although widespread rain is not expected.