**Forecasts for Cape Town's overnight low on October 5, 2026, center on 13–14°C (mid-50s °F), near seasonal spring averages, with models showing mild conditions driven by southerly to southwesterly flow, limited cloud cover, and no strong cold-air intrusions.** Multiple sources, including Met Office, WeatherBug, and WindBorne, indicate nighttime minima around 56–58°F (13–14°C) under mostly clear to partly cloudy skies, with light winds and minimal precipitation risk until later in the week. The near-even market split between sub-9°C and 19°C+ outcomes reflects uncertainty in exact radiational cooling rates and local topographic effects around Table Mountain, where clear skies could enhance overnight drops while any onshore flow moderates them. Traders appear to weigh stable model consensus against the possibility of forecast shifts closer to the date. Key upcoming inputs include refined runs from global and regional models, plus official guidance from the South African Weather Service.