Heat waves in NYC: 3+ days in a row at 90°F or hotter. Sun, Aug 5, 2001: 90°F / 70°F Mon, Aug 6, 2001: 94°F / 75°F Tue, Aug 7, 2001: 99°F / 78°F Wed, Aug 8, 2001: 99°F / 79°F Thu, Aug 9, 2001: 103°F / 82°F Fri, Aug 10, 2001: 97°F / 75°F, 0.4″ rain Source: NOAA GHCN-Daily, Ny City Cntrl Park (USW00094728).