From Consumer Reports magazine (Nov 2018), I'm attaching their article rating all-season, all-weather, and winter tires.
And from Consumer Reports online, I'm attaching their ratings for summer performance tires (data is based on older test methods).
Quote from Consumer ReportsSummer: Suited for temperatures above 45˚ F.
All-Season: Suited to year-round driving in varying climates with moderate winter driving conditions.
All-Weather: Suited to year-round driving in varying climates with emphasis on winter grip.
Winter/Snow: Designed to provide optimum grip in severe winter conditions with temperatures below 40˚ F.