The air is changing in the sky over New England and Friday’s cloud cover is evidence of the clash of cool air with incoming warmth. Although organized rain won’t be entering New England until Friday evening and night from west to east, respectively, some sprinkles will fall during the day Friday for a few communities. Perhaps most remarkable will be the difference in weather Saturday, behind Friday evening and night showers that linger into early Saturday morning but give way to increasing sunshine and highs in the 70s. If our forecast high of 75 verifies in Boston, that will be the warmest for the City since October 10, making it 184 days since Bostonians were so warm on October 10. Cape Cod and the Islands will likely remain in lots of clouds Saturday, holding temperatures down, courtesy of a southerly wind off the cool ocean waters. A cold front will slice south across New England Saturday evening and ensure Sunday isn’t quite as warm and clouds will be on the increase ahead of the next storm system. At this point, it looks like rain will develop from west to east Sunday evening and night, continuing into Patriots Day Monday, which of course has significant bearing on the running of the Boston Marathon. If this storm takes the track directly over New England that we are anticipating, a sharp warm front will be moving from south to north across the Marathon race route early Monday morning, taking temperatures in the 40s early and raising them to the 60s by afternoon with a wind shifting to blow from the south and gusting to 50 mph by late day. The heaviest rain is likely during the morning, but recurring showers will be with us through the day with some embedded thunderstorms even a possibility Monday midday! Drier air arrives for the best days of April school vacation Tuesday through Thursday, before another expansive storm system to our west brings a renewed chance of showers for the end of next week in the exclusive First Alert 10-day forecast.