Current numerical weather models for Taipei on July 1 project daytime highs clustered around 33–35°C, aligning with the market’s near-even odds across those bins. Subtropical high pressure and the East Asian summer monsoon maintain warm, humid conditions, while afternoon sea breezes and potential thundershowers—common in early July—can cap peak temperatures through evaporative cooling or allow brief clearing that boosts readings. Forecast spread stems mainly from uncertainty in convective timing and any weak frontal passage; a few hours’ difference in rainfall onset can shift the daily maximum by 1–2°C. Historical July averages near 32–34°C and recent above-normal warmth provide context, but short-range model runs remain the dominant driver of trader consensus.