Recent forecasts from official monitoring sources indicate stable, predominantly dry conditions across southeastern Brazil through August 23, supporting maximum temperatures near seasonal norms of 23–25°C but with recent above-average warmth sustaining trader focus on the upper end of that range. Model guidance and observational trends point to partly cloudy skies and limited daytime heating on August 21, favoring 25°C or 26°C as the most probable highs while reducing upside potential beyond 27°C. Light isolated showers late in the period could further cap peaks, consistent with the market-implied probabilities clustering tightly around these outcomes and reflecting the narrow uncertainty window typical for next-day temperature resolution.