Trader consensus on Polymarket closely splits between 62-63°F (39%) and 60-61°F (34.5%) for San Francisco International Airport's (KSFO) high temperature today, reflecting National Weather Service forecasts of scattered showers, possible thunderstorms, and southwest winds 10-20 mph capping peaks amid a persistent marine layer. Recent 00Z GFS and ECMWF model runs cluster highs in the low-to-mid 60s, but uncertainty stems from cloud deck persistence—prolonged stratus could limit insolation for 60-61°F, while partial afternoon clearing might push to 62-63°F, aligning with April climatological norms around 62°F. Ongoing hourly observations and NWS updates through evening will refine the outcome as daytime heating battles cool air advection.