Boston woke up early Saturday, April 25, to mostly clear skies and a brisk 37°F at Logan Airport. A cool onshore breeze off the water will cap afternoon highs around 49°F, so spots along the harbor and waterfront will feel noticeably colder than neighborhoods farther inland. Clouds will steadily increase through the evening, with the best shot at light, spotty rain tonight focused on western Massachusetts and parts of southern Rhode Island.
Coastal Low Could Make Sunday Raw
The main weather action arrives with a coastal low expected to slide just south of New England from Sunday into Monday, potentially bringing periods of rain and breezy northeast winds to the South Coast, Cape and Islands. The National Weather Service has already nudged up rain chances and northeast wind speeds for southeast Massachusetts. If the low tracks a bit closer to shore, gusts over open waters could ramp up to near gale force, although both timing and intensity are still uncertain. Look for Sunday highs around 52°F inland, with cooler readings at the coast as the onshore flow strengthens. According to the National Weather Service, forecasters are watching the low’s exact path for any bump in wind and rain potential.
Today and Tonight
Expect a mix of sun and clouds this afternoon, with northeast winds of 5 to 10 mph and a high near 49°F, per the National Weather Service Boston forecast. Tonight turns mostly cloudy, with a low around 39°F and a slight chance of light rain, first appearing in far western Massachusetts and then spreading toward southern Rhode Island. If you have evening plans inland, most spots should stay dry, but coastal neighborhoods will feel that cool, damp onshore air a bit earlier.
Boaters and Commuters
For now, seas remain below Small Craft Advisory levels, with generally light winds and waves, though southern waters may see seas around 3 to 4 feet. If the coastal low tucks closer to New England, Sunday night could bring seas near 5 feet and gusty northeast winds that may trigger Small Craft Advisories on the southern waters. Ferry riders and small-boat operators should check the latest marine forecast before heading out.
Bottom line: grab a light jacket for today and keep an umbrella handy for Sunday, especially if you are on the South Shore or Cape. We will update readers if any watches or advisories are posted.
