April 20, 2026 is a recurring daily temperature trading window for Wellington, New Zealand. This market contracts on whether the city's maximum recorded temperature will equal exactly 18°C on that date. Wellington's autumn weather typically ranges from 10°C to 18°C during this season, making specific temperature predictions a precise exercise. The market currently prices the 18°C outcome at just 1% implied probability, suggesting traders expect the daily high will fall below or significantly exceed this threshold. Historical April weather data shows Wellington rarely hits exact temperature milestones; the 1% pricing reflects this scarcity and the specificity of the threshold. Weather prediction markets derive their settlement data from official meteorological recordings provided by New Zealand's national weather service, ensuring transparent and objectively verifiable resolution. The market closes at midnight UTC on April 20, giving traders approximately 24 hours of real-time price updates as weather forecasts refine through the day. Daily temperature markets like this one appeal to traders interested in weather volatility and short-duration prediction positions. Trading volume of $2,527 in 24 hours indicates modest but consistent interest in temperature-specific markets, typical for daily recurring weather contracts.