Official 2026 Boston Marathon weather forecast discussion thread

Forecast I just saw was high of 64, low of 47, winds WSW at 10-15 mph. So that means race will be in the mid 50s, with a tailwind. Should be pretty good conditions!

Looks like a chance of rain at day 14...FWIW.

I don't start looking at the forecast for a Thon/Ultra until Wednesday of race week at the earliest. 14 is cray cray but understandable, excitement. 100+ Marathons/Ultras

It's much too early but CJ Albertson is already in the lead.

LIAR

of

Camille?

AccuWeather says high of 56, low of 47. Winds WNW 7-20mph and mostly overcast clearing later in day. Very little to no risk of rain. That is very good conditions! I’ve run 10 BM’s including last year when temps were on the warmer side getting into the 70s post race.

What did you think of 2018 ?

100+ ???

Forecast does look pretty good. And for you non-weather nerds out there, these long range forecasts are where there's been the most improvement in accuracy. It's at the point now where 10 day forecasts have about a 60% accuracy, almost double of what they were 20 years ago. That actually makes them generally considered "useful". So while it's still too early to look at specifics temps within a couple of degrees, or exact wind direction, you can ALMOST rule out a massive change in the prediction at this point.

I am not elite but I get to start with the elite corral. I train in the south and always perform better on warmer years.
The forecast definitely favors the South.

Forecast is trending slightly cooler, with the best news of the real warm temps certainly clearing out by the weekend. And with fairly moderate temps forecasted after Monday, you can rule out a hot race. Wind direction remains impossible to forecast at this point though.

Current forecast is for 42 low high 56 marathon monday. winds nw at 10 to 20 mph

AI says 60 degrees F with a tailwind.

How does 40 at the start with a massive tailwind sound? Get ready to run fast people.

It is too late to get ready. The race is a week from today.

In the Northeast, ALWAYS go with the marine forecast, it’s the most reliable model.

NOAA or regional marine sites.