The Central Weather Administration's latest guidance amid a passing frontal system over northern Taiwan on April 17 has concentrated trader consensus on Taipei's April 19 high temperature around 27-29°C, with implied probabilities tightly clustered at 22-24% for each leading outcome. Post-frontal northeasterly winds and lingering cloudiness introduce uncertainty, potentially capping peaks at 27°C under persistent overcast skies or permitting 29°C spikes via afternoon partial clearing and urban heat island effects in Taipei. Ensemble forecasts from global models like GFS and ECMWF show spreads of 2-3°C, reflecting sensitivity to insolation, humidity, and sea breeze timing. Historical April highs average 25°C, but recent warm spells have elevated baselines; monitor CWA daily updates for resolution-defining observations from Taipei stations.