Cooler, sunny spring weather expected for the Boston Marathon on Monday

Still others will trek to Fenway, where the Red Sox play a day game against the White Sox, with first pitch at 11:10 a.m. And so far, the forecast shows Monday looking like a great spring day with mostly sunny skies. The average high in Boston for April 21 is 59 degrees, and it’s looking like we’ll end up somewhere between 55 and 60 Monday afternoon, with a cooler-than-average start to the day — pretty ideal running temperatures for the race. After a more seasonal and breezy Easter Sunday with...