Weather
Eastern Massachusetts Weather Alert: 32° Cold, Then 58° Oct 18-19
Boston, MA – Temperatures could approach the freezing mark in parts of Greater Boston early Sunday, Oct. 18, as a strong cold front ushers in a noticeably colder weekend across eastern Massachusetts.
By Marcus Hale · 2026-10-16T07:33:28.389Z
Boston, MA – Temperatures could approach the freezing mark in parts of Greater Boston early Sunday, Oct. 18, as a strong cold front ushers in a noticeably colder weekend across eastern Massachusetts. The National Weather Service forecasts a low near 32 degrees Saturday night for Chestnut Hill, followed by sunshine and a high near 54 degrees Sunday. The colder conditions could affect sensitive outdoor plants and early morning activities before temperatures gradually recover during the first half of the workweek.
According to the National Weather Service, the forecast for Chestnut Hill calls for clear skies Saturday night, with northwest winds of 5 to 13 mph and temperatures falling to approximately 32 degrees. The forecast point is west of downtown Boston, and temperatures closer to the waterfront may differ. The outlook does not establish a freeze warning or frost advisory, but residents in colder inland neighborhoods should monitor updated forecasts as the weekend approaches.
Near Freezing Temperatures Arrive Sunday Morning Sunday morning represents the most significant cold weather development in the available seven day forecast. After Saturday's expected high near 50 degrees, temperatures will fall sharply beneath clearing skies. The combination of colder air and nighttime cooling could bring readings near freezing in some neighborhoods, particularly away from the immediate coastline where water temperatures can moderate overnight conditions.
The temperature change follows a passing cold front that will bring showers and gusty winds into eastern Massachusetts Friday and early Saturday. Friday's high is expected to reach approximately 70 degrees before colder air arrives. By Sunday morning, the forecast low near Chestnut Hill will be 38 degrees below Friday's projected afternoon high, illustrating the substantial change unfolding over roughly two days rather than a sudden hourly temperature collapse.
For residents maintaining gardens or outdoor plants, the approaching cold could warrant precautions. Temperatures near 32 degrees can damage sensitive vegetation, although the exact extent of any frost or freezing conditions will depend on local temperatures, wind and exposure. Gardeners may want to consider protecting vulnerable plants Saturday evening, particularly in sheltered locations that cool more efficiently after sunset.
Weekend Travel and Outdoor Activities The transition to colder weather will also bring gusty conditions Saturday, when northwest winds of 14 to 17 mph could produce gusts reaching 30 mph. A 30% chance of showers remains in the forecast, mainly before 8 a.m., before clouds gradually decrease and sunshine returns. The combination of wind and temperatures near 50 degrees may make outdoor activities feel considerably colder than the preceding afternoon.
Motorists traveling Interstate 90, Interstate 93, Route 128 and other major roads around Greater Boston should be prepared for changing conditions during the weekend. Gusty winds could be noticeable on exposed bridges and elevated roadways Saturday, while early Sunday temperatures may approach freezing in colder locations. However, the supplied forecast does not indicate freezing precipitation, confirmed icy road conditions or highway closures.
Sunday afternoon should offer more comfortable weather, with sunshine and a high near 54 degrees. Northwest winds around 6 mph will become southwesterly during the afternoon, allowing conditions to feel less blustery than Saturday. The improvement will be especially welcome for residents planning outdoor gatherings, recreational activities or travel around Boston and surrounding Middlesex and Norfolk county communities.
Warmer Conditions Return Early Next Week Monday, Oct. 19, begins a gradual warming trend, with mostly sunny skies and a high near 58 degrees. Temperatures will fall to approximately 41 degrees Monday night, keeping mornings cool without returning to the near freezing readings forecast for Saturday night. Tuesday will bring partly sunny skies and a high near 61 degrees, followed by a nighttime low around 44 degrees.
The relatively quiet pattern continues Wednesday, Oct. 21, with sunshine and a high near 58 degrees. Northeast winds could gust to 21 mph, but no significant precipitation is identified in the supplied outlook. Thursday is expected to remain mostly sunny, with a high near 56 degrees.
For Greater Boston residents, the main weather concern is the approaching cold early Sunday, followed by several days of milder, generally dry conditions.
Are you preparing to protect outdoor plants from Sunday's near freezing temperatures, or are you welcoming the colder fall weather?
Five Day Weather Outlook Friday 10/16: Showers are expected mainly before 4 p.m., with a 90% precipitation chance, patchy fog and a high near 70 degrees; southerly winds could gust to 30 mph before temperatures fall near 44 degrees Friday night.
Saturday 10/17: A 30% chance of early showers will give way to decreasing clouds and a high near 50 degrees, with northwest wind gusts reaching 30 mph; clear skies Saturday night will allow temperatures to fall near 32 degrees.
Sunday 10/18: A cold morning near 32 degrees will give way to sunny skies and an afternoon high around 54 degrees, with northwest winds becoming southwesterly; Sunday night turns mostly clear, with a low near 38 degrees.
Monday 10/19: Mostly sunny skies will bring a high near 58 degrees, with light northerly winds becoming easterly during the afternoon; Monday night becomes partly cloudy, with temperatures falling to approximately 41 degrees.
Tuesday 10/20: Partly sunny conditions will bring a high near 61 degrees, with north winds around 8 mph; Tuesday night remains partly cloudy, with a low around 44 degrees and lighter northerly winds.
Extended Weather Outlook Wednesday, Oct. 21, should bring sunny skies and a high near 58 degrees, with northeast winds of 9 to 11 mph and gusts potentially reaching 21 mph. Wednesday night will be mostly clear, with a low near 42 degrees.
Thursday, Oct. 22, is expected to remain mostly sunny, with a high near 56 degrees and northeast winds of 7 to 9 mph.