The Boston Marathon is held in any kind of weather and that makes the forecast for runners and spectators extremely important ...

Here's what we know about the conditions for runners and spectators on Monday during the 129th Boston Marathon.

The Marathon forecast is calling for mostly sunny skies with highs likely reaching the upper 50s or 60 along the course.

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This latest hour-by-hour forecast shows the temperatures, wind direction and conditions along the 26.2 Boston Marathon course.