Seoul's spring weather on April 19 typically ranges between 15°C and 22°C, with average highs around 19°C historically. This market asks whether the city's maximum temperature will be exactly 19 degrees Celsius on that specific date in 2026. The 3 percent YES odds reflect how difficult it is to predict an exact temperature outcome, given Seoul's variable spring weather patterns. Even small variations of one degree either way—whether a high of 18°C or 20°C—would resolve this market to NO. April in Seoul marks the transition between winter and full spring, with fluctuating weather influenced by continental high pressure systems and warming fronts from the south. This natural volatility makes exact-degree markets particularly challenging for traders. The market is resolvable using official data from the Korea Meteorological Administration, which provides daily maximum temperature records for Seoul. With such precise requirements, markets on exact daily temperatures typically remain lowly-priced throughout their lifespan, as hitting any single specific degree is statistically uncommon. This particular market exemplifies the challenge of weather precision trading in prediction markets.