Rainy and Overcast CPW Weather Ahead for Boston

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The upcoming Cool, Partly Wet (CPW) weather in Boston will feature rainy and overcast conditions, with temperatures running slightly below average. A marine layer blowing in from the ocean will lead to rapid temperature drops, and steady rain is expected on Sunday as a cold front moves through the region.

Why it matters

Boston's spring weather can be notoriously unpredictable, with sudden shifts between warm and cool conditions. This CPW period highlights how the city's coastal location makes it vulnerable to the influence of ocean air masses, leading to variable and often unsettled weather patterns.

The details

The forecast calls for sunny and warm mornings in the 70s, followed by rapid temperature drops into the 50s as an easterly sea breeze takes over. Rain showers are expected early Friday morning and again in the afternoon. Saturday will be dry but cool with cloud cover, and Sunday will see steady rain most of the day as a cold front moves through, dropping temperatures to near freezing by Monday morning.

• On Wednesday, sunny and warm temperatures in the 70s in the morning were followed by a rapid drop into the 50s once the wind switched from the southwest to the east.
• On Friday, April 15, the same pattern of morning warmth and afternoon cooling is expected to occur.
• Rain showers are forecast for early Friday morning and again later in the afternoon.
• On Sunday, a large cold front will move across the region, bringing steady rain for most of the day.
• By Monday morning, the temperature will be in the low 30s.

What’s next

By middle to late next week, seasonal temperatures are expected to return with highs running near 60°F and lows near 40°F.