Northeast monsoon strengthening has driven recent cooling across northern Taiwan, with Central Weather Administration advisories noting daytime highs falling from prior 32–34°C levels toward 23–28°C ranges by October 7 amid persistent northeasterly flow and easing showers. Official outlooks and ensemble guidance indicate partly cloudy conditions with peak temperatures most likely near 25–27°C, though variable cloud cover, wind speeds around 8–13 m/s, and localized heating could allow brief excursions to 28–29°C or cap them lower. This genuine forecast spread across models explains the tight clustering of market-implied odds around 27–29°C, reflecting traders’ assessment of resolution thresholds under evolving atmospheric steering. Updated model runs and CWA briefings ahead of October 7 remain the key near-term catalysts.