Here’s the Weather Forecast for 2018 Boston Marathon

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The Boston skyline on a foggy day

Photo via iStock/sorsillo

It’s going to rain on our parade.

The forecast for Marathon Monday in Boston is a bleak one, with the National Weather Service predicting showers on Patriots Day and the potential for isolated thunderstorms. Meteorologists anticipate between 1 and 2 inches of rain will fall, with storms most likely to strike between 10 a.m. and 3 p.m.—just in time for the runners in the thick of the race. Particularly heavy rainfall and fog is expected intermittently throughout the day in greater-Boston, and wind gusts could reach 35 miles per hour, according to the National Weather Service.

Don’t shoot the messenger. 🙄 Pockets of sleet & freezing rain will develop today & become more widespread tonight. Precipitation will transition to rain by Monday morning, with widespread heavy rainfall by the early afternoon. Here is an approx timeline for planning purposes:

— NWS Boston (@NWSBoston) April 15, 2018

In addition to the rain, the 2018 marathon is poised to be one of the chilliest in recent years. When the first wave of wheelchair athletes cross the starting line in Hopkinton on Monday, it will likely be just below 40 degrees. Meteorologists anticipate temperatures in Boston will crawl into the upper 40s by the late afternoon, and the National Weather Service pegs the city’s high temperature at 52 degrees for the day. This year’s temperature will likely mimic what we saw for the 2015 and 2009 marathons, according to WBZ meteorologist Barry Burbank. Monday’s race will be a far cry from Patriots Day in 2012, when it was dangerously hot.

The 2018 Boston Marathon High Temperature Will Be Close To The 2009 Max. #wbz

— Barry Burbank (@BarryWBZ) April 14, 2018

As for Monday night, meteorologists predict it will be comparably dry, with just a slim chance of showers between midnight and 2 a.m. Fog and clouds are likely in the evening and will linger into Tuesday.

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