Based on the website blog I'd say no.
Sunday River | Mountain Report
"Today at Sunday River
Temps are dropping, the snow is ready to fly, and it's time to plan the weekend. Have you picked up your New England Pass yet? Swing by the Welcome Center in South Ridge Lodge, purchase your pass by giving us a call at (800) 430-0772, or buy your season pass online now. We typically open before Halloween so the winter season is nearly upon us. The snow guns are prepped and temperatures are dropping into the snow zone this week. Think cold thoughts!!"
You can always call their 1-800 number