Recent forecast guidance for Buenos Aires indicates a likely daily maximum near 14°C on June 17, with model spreads supporting the tight contest between 14°C and 15°C outcomes. Mid-winter conditions in the Southern Hemisphere feature modest solar heating and frequent influence from passing cold fronts or Atlantic maritime air, which can shift daytime peaks by 1–2°C depending on cloud cover and wind direction. Official resolution relies on measurements at a designated station such as Ministro Pistarini International Airport, where even small differences in afternoon boundary-layer mixing or brief clear spells can determine whether the high reaches 15°C. Traders are weighting the latest ensemble runs and local observations that will refine this narrow range before final readings are confirmed.