Recent forecasts from agencies including the Met Office and BBC indicate daytime highs in Buenos Aires around 11–13 °C on July 20 amid typical mid-winter conditions, with southerly winds and periods of cloud and light rain limiting solar heating. The closely matched market probabilities for 13 °C and 14 °C reflect model uncertainty in the precise arrival and strength of a passing frontal system that could either suppress or allow modest afternoon warming. Key differentiating factors include surface pressure gradients steering cooler maritime air, the extent of low-level cloud cover reducing daytime insolation, and local urban heat-island effects that can add 1–2 °C relative to rural stations. Historical July highs average near 15 °C, so any delay in the front or clearer skies would support the higher outcomes while a stronger cold surge would favor 12 °C or below. Updated model runs tomorrow morning will likely refine these probabilities ahead of market resolution.