The Boston Marathon is set to kick off on a Monday, with weather that's perfect for running. The day will start cool, with temperatures in the upper 30s to low 40s, but it will warm up nicely by noon, reaching the mid-50s. By afternoon, temperatures will climb to the upper 50s to low 60s, with light winds making it comfortable for both runners and spectators.

The big question is whether clouds will roll in by early afternoon. If they do, they'll help keep the temperature in check and prevent it from getting too warm. If not, temperatures could rise closer to 65 degrees, which might make things uncomfortable for runners. Cloud cover is key to keeping the heat at bay and avoiding heat exhaustion.

The day will start with mostly sunny skies, but clouds will build in the afternoon. There's a slight chance of a quick shower in the evening, but it shouldn't interfere with the race. The wind won't be much of a factor, with speeds staying below 10 miles per hour. However, a slight seabreeze could create a headwind for runners in the final stretch.

For those not at the marathon, there's always the Red Sox game at Fenway Park. The first pitch is at 11:10 a. m. , and the weather should be pleasant for a day at the ballpark. The rest of Southern New England can expect a mix of sun and clouds, with highs in the low 60s. The Cape and Islands will be a bit cooler, with highs in the low 50s.

Looking back at past marathons, the average high over the past 10 years has been 63 degrees. The hottest marathon was in 1905, with temperatures hitting 100 degrees. The coldest was in 2015, with a high of just 46 degrees. Rain has fallen on four of the past 10 marathons, and snow has been known to fall on race day, most recently in 1967.

The weather pattern has been active lately, but things should calm down for marathon day. A pocket of high pressure will keep things dry and comfortable. It's shaping up to be a great day for the Boston Marathon, with weather that's just right for running. So, whether you're a runner or a spectator, get ready to enjoy the spring weather and the excitement of the race.

Spring's Chill and Thrill: Boston Marathon Weather

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