High pressure ridging over New Zealand is promoting clear skies and light northerly winds over Wellington, favoring radiative cooling overnight and supporting a minimum temperature near 9–11 °C on 30 September. Official guidance from MetService and international models shows steady overnight lows in that range, with limited cloud cover and dew points around 8–10 °C limiting further drops. Trader consensus reflected in the closely matched probabilities for 5 °C, 6 °C, and 12 °C+ outcomes highlights uncertainty around exact boundary-layer mixing and any late northerly surge, while historical September minima for the city average near 8 °C. Updated model runs and MetService briefings expected later today will refine the final overnight minimum before resolution.