**Current forecasts from Météo-France and supporting models indicate an overnight minimum near 16–17°C for Paris on June 17 under clear skies and a strengthening heatwave pattern, with daytime highs climbing to 32–33°C.** This scientific consensus—rooted in observed warming trends, stable high-pressure steering, and minimal overnight radiative cooling—drives the market's overwhelming 99.6% implied probability on the 16°C outcome. Historical June climatology supports such mild lows during early-season heat episodes, while model agreement reduces forecast spread. A realistic challenge would require an unpredicted late surge in northerly flow, increased cloud cover, or station-specific measurement variance that shifts the official recorded minimum outside the narrow band.