Recent southerly airflow and associated showers across Wellington have cooled the outlook for October 17, with official guidance and ensemble models from sources such as MetService-aligned forecasts and GFS runs pointing to a daytime maximum near 11–12 °C under persistent cloud and brisk southerly winds of 20–30 km/h. These conditions limit insolation and keep surface temperatures below the October climatological average of roughly 14–15 °C. Trader positioning, with 13 °C at 57.5 % and 12 °C at 30 %, reflects the narrow range of latest model outputs while acknowledging residual uncertainty from possible timing shifts in the front or brief clearing. New high-resolution runs and MetService briefings expected in the next 24–48 hours will further constrain the precise peak value.