Wet Weekend Weather Forecast for Boston Marathon

Rain and cold temperatures expected to impact Patriots' Day race

Apr. 19, 2026 at 1:44pm

A sweeping, atmospheric landscape painting in muted tones of gray, blue, and green, depicting the Boston Marathon course winding through a misty, windswept environment, with the Prudential Tower barely visible in the distance, conveying the overwhelming power of nature.Inclement weather casts a somber, yet sublime mood over the iconic Boston Marathon route.Boston Today

The Boston area is bracing for a wet and chilly weekend leading up to the Boston Marathon on Patriots' Day. Sunday's rain will break for the start of the race, but showers could return by late afternoon. Temperatures are expected to stay in the 40s throughout the day, with a gusty west wind making it feel even colder for runners and spectators.

Why it matters

The Boston Marathon is one of the city's most iconic annual events, drawing thousands of runners and spectators. Inclement weather can significantly impact the race conditions and experience for all involved.

The details

A cold front will bring rain to the region on Sunday, with temperatures staying in the 40s and winds gusting up to 20 mph. While the rain is expected to clear out by the start of the race on Monday morning, there is a chance of some late-afternoon showers. Overnight lows will dip below freezing in the suburbs, and the cool temperatures are expected to persist through the week.

  • Sunday's rain will continue through the late evening hours.
  • On Marathon Monday, temperatures will start in the mid-30s in Hopkinton and reach only the 40s throughout the day.
  • Overnight lows on Tuesday morning will drop below freezing in the suburbs.

The players

Pamela Gardner

A meteorologist reporting on the Boston Marathon weather forecast for NBC10 Boston.

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What they’re saying

“Spectators and volunteers need extra layers and some hand warmers with temps no greater than the 40s all day long.”

— Pamela Gardner, Meteorologist

What’s next

Runners and spectators should prepare for cool, potentially wet conditions on Marathon Monday and plan to dress accordingly. The weather could impact race times and the overall experience for those participating in or attending the event.

The takeaway

The Boston Marathon is a beloved annual tradition, but the unpredictable New England weather can sometimes pose challenges. This year's race may require extra preparation and layers to stay comfortable during the cool, wet conditions.