**Persistent cloud cover, easterly onshore flow, and light drizzle are suppressing daytime heating in Buenos Aires on October 13, keeping forecast highs mostly in the 17–19 °C range across major models.** Recent observations show continued overcast skies and moist easterly winds limiting solar insolation, consistent with a cooler-than-average start to the month. Ensemble guidance and official outlooks from sources like the Met Office and Open-Meteo converge on a peak near 18 °C, with limited warm-air advection expected. This scientific setup explains why the market-implied odds cluster tightly around 19–21 °C—the range where small forecast revisions or micro-climate variations could resolve—while lower outcomes remain discounted and higher ones priced as low-probability tail risks. Traders are closely watching the final overnight model updates for any shift in boundary-layer moisture or wind direction before resolution.