France's summer 2026 has already shattered long-standing meteorological benchmarks, with June delivering the nation's hottest day on record at a national average near 30°C and peaks exceeding 44°C in multiple regions—eclipsing the previous marks from the infamous 2003 heatwave. Successive heat domes through July and into mid-August, compounded by elevated sea surface temperatures and persistent drought conditions, have kept averages on a trajectory to surpass historical benchmarks, fueling trader consensus around the 94.5% implied probability for "Yes." While a dramatic late-August cooldown could theoretically alter the final tally, the scale of early-season extremes and ongoing alerts make such a reversal unlikely.