Grab the family and make your way to downtown Wilmette for the annual Summerfest & Sidewalk Sale! Friday/Saturday July 19-20, 2018. Join nearly 3,000 of your closest friends for three days of fun, shopping, food and more in downtown Wilmette. See artisans and crafters throughout the fest. Wilmette Summerfest & Sidewalk Sale has it all…where even the hottest summer days are cool!