**Forecast models indicate a high of 16–18°C in Buenos Aires on August 26, driven by northeasterly flow, persistent cloud cover, and limited daytime heating ahead of an approaching frontal system.** Current conditions on August 25 show temperatures near 9–12°C under mostly cloudy skies with light northeast winds, keeping the boundary layer stable and suppressing rapid warming. Multiple forecasts (including WeatherBug, Yr.no, Met Office, and others) project a modest rise tomorrow, with afternoon peaks around 16–18°C (roughly 61–65°F) before increasing moisture and a chance of showers or thunderstorms by evening. These values align closely with late-August climatology but reflect below-normal warmth given the recent cooler stretch. Market-implied probabilities favor 18–19°C because ensemble guidance shows modest uncertainty in exact peak timing and insolation, with any clearing or stronger winds potentially adding 1–2°C while thicker clouds or earlier rain would cap readings near 16–17°C. No major model outliers suggest extremes outside the 15–20°C window.