Persistent southwest monsoon activity over Manila on September 5 produced widespread cloud cover, frequent showers, and limited solar heating, anchoring the daily maximum at the Ninoy Aquino International Airport station near 29°C. Official observations from NOAA align with this outcome, reflecting typical late-summer conditions where high humidity and convective activity suppress peaks several degrees below seasonal averages. Trader consensus at 100% implied probability for 29°C reflects near-certainty once hourly readings closed the day. A late data revision or use of an alternate source like Weather Underground could theoretically shift resolution, though such discrepancies remain rare given established verification protocols.