The market's leading 14°C outcome at nearly 50% reflects the latest MetService ensemble runs and international numerical weather prediction models converging on a daytime maximum near that value under typical mid-autumn conditions over Wellington. Moderate northerly flow ahead of a weak front is promoting gradual warming while Cook Strait winds limit excessive buildup, keeping the peak aligned with the 12–15°C climatological core for May at Wellington Airport. Recent surface observations confirm temperatures tracking seasonal baselines without strong warm advection or clear-sky amplification that could push toward 15–16°C. The combined 13–15°C bands dominate because model spread remains modest, with final overnight guidance and any last-minute cloud or wind shifts likely deciding whether the high settles at 14°C or edges slightly lower.