Boston Marathon

How’s the weather looking for Marathon Monday? Here’s the early forecast.

Take an early look at the weather conditions for the 2026 Boston Marathon.

By Heather Alterisio

Less than a minute to read
Boston Marathon 2026:

Marathon Monday is less than a week away. Whether you’re an athlete or a spectator, you’re likely curious about the weather conditions ahead for the 2026 Boston Marathon.

Here’s a very early look at the forecast, according to local meteorologists.

National Weather Service: “Mostly sunny, with a high near 49. West wind 9 to 11 mph.”

WCVB: “Intervals of clouds and sunshine. High 46F. Winds NW at 10 to 20 mph.”

Boston 25 News: “Sunshine and clouds mixed. High 48F. Winds WNW at 10 to 15 mph.”

Chris Lambert, 7News: “Pattern change ahead. By Marathon Monday, we’ll have a cool northwesterly breeze and temps in the 40s to near 50.”

Boston 7-day forecast

Daily Local Weather Forecast

  • Today April 16
    Mostly cloudy
    Mostly cloudy
    54° 45°
  • Fri April 17
    Thunderstorms
    Thunderstorms
    64° 48°
  • Sat April 18
    Cloudy
    Cloudy
    50° 45°
  • Sun April 19
    Showers
    Showers
    54° 39°
  • Mon April 20
    Intermittent clouds
    Intermittent clouds
    49° 33°
  • Tue April 21
    Mostly sunny
    Mostly sunny
    50° 42°
  • Wed April 22
    Showers
    Showers
    63° 44°

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Heather Alterisio

Senior Content Producer

Heather Alterisio, a senior content producer, joined Boston.com in 2022 after working for more than five years as a general assignment reporter at newspapers in Massachusetts.

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