I just did Chicago and the MCM 26.2 Marine Corps Marathon Shirt was like this – it was great. I ran MCM last year when it was 80… I’ll take cold and rainy over hot and humid any day. Good luck runners!. 40% chance is hardly anything. Looks absolutely PERFECT to me! I’ll take that gladly over the hellacious ball of Hell Fire we had beaming down on us last year. Ran my first marathon in all rain. Ran MCM last year in the heat. Be grateful for this forecast. Just prep for it. You’ve come this far, no chickening out now!! Go get it. I’m so hoping it doesn’t rain. I’m packing a poncho, just in case. I’m from San Diego an have been training in the low 80s and sunshine. I’m very ready for the cold, just not rain! Hoping the cold will help my time. Wear cover clothes to toss; take a blanket to cover with before race to toss; use hand and foot warmers for pre race then toss; do whatever you need to stay warm while you wait for the race to start.