Singapore maintains a tropical climate with consistent weather patterns throughout the year. In April, the island nation typically records daily high temperatures between 30 and 32 degrees Celsius, driven by equatorial positioning and monsoon dynamics. A high of exactly 25 degrees Celsius would represent a dramatic departure from historical norms—roughly 5-7 degrees cooler than typical April weather. The market currently prices this outcome at 0%, reflecting overwhelming consensus that such a significant cooling event is exceptionally unlikely during this period. Resolution depends on official data from Singapore's national weather service, published daily in their meteorological reports. While extreme weather events occur globally, Singapore's stable tropical climate makes sudden temperature anomalies of this magnitude rare. The persistent 0% pricing suggests traders are highly confident that typical warm April conditions will prevail, with minimal risk of the anomalous cooling required for this market to resolve YES.