Seattle experiences variable spring weather, and April brings transitional conditions between cooler early-spring temperatures and warmer late-spring patterns. This market tracks whether the highest temperature on April 20 will fall specifically between 54°F and 55°F—a narrow, one-degree range that captures a typical mild spring day. The current YES odds at 0% reflect strong market consensus that the high temperature will fall outside this specific band, suggesting traders expect either warmer conditions (above 55°F) or significantly cooler conditions (below 54°F) on April 20. National Weather Service forecasts and local temperature observations from the Seattle area provide the objective resolution criteria for this market. Weather prediction markets serve as a real-time aggregation of meteorological expectations, with odds shifting as forecast models update throughout the day. The extremely low odds indicate high confidence that tomorrow's high will deviate meaningfully from the 54-55°F range. This type of precise temperature prediction market demonstrates how prediction markets can price very specific weather outcomes, with the zero-odds outcome suggesting extreme market disagreement with that narrow range.