Trader consensus on Polymarket reflects tight uncertainty in Central Weather Administration (CWA) short-range forecasts for Taipei Songshan Airport, where model ensembles project April 19 highs of 26–30°C amid partly cloudy skies following a recent frontal passage. Recent developments—a high-pressure ridge drove 30–32°C peaks on April 14–16, but the front's arrival over the past 48 hours introduced clouds and showers, capping April 17–18 projections at 23–28°C—have traders weighing post-frontal recovery potential. Key differentiators include divergent guidance on clearing timing and insolation, with urban heat island effects and diurnal heating favoring 28°C (24% implied probability) over cooler 26°C (18%) or warmer 30°C (10%); updated CWA runs expected April 18 could sharpen resolution criteria based on observed max at the station. Historical late-April averages hover near 27°C, underscoring typical spring variability.