Welcome to this deep dive into one of the most remarkable weather events Long Island has seen in decades: the prolonged sub-freezing temperature streak of late January into early February 2026. At Long Island MacArthur Airport (Islip) the primary official climate station for Long Island with records dating back to September 1963 temperatures remained at or below the freezing mark (32°F) for highs for an impressive 13 consecutive days , from January 24 through February 5,