This market tracks whether the highest temperature in Seattle on April 18, 2026, will reach 50°F or higher. The outcome is determined by official NOAA or National Weather Service records for the Seattle-Tacoma metropolitan area, ensuring an objective, verifiable resolution. April temperatures in Seattle typically range from 45–60°F, though daily highs vary significantly based on seasonal weather patterns and incoming weather systems. At current 100% YES odds, the market reflects extremely high confidence that the day's high temperature will reach or exceed 50°F. This pricing implies strong trader conviction that mild spring conditions will dominate rather than an unexpected cold snap. The $10,070 in 24-hour volume shows active trading interest in this weather prediction despite the extreme odds outcome. Historical temperature records for mid-April in Seattle provide baseline context for baseline expectations. The market resolves at midnight UTC on April 18, 2026, using official weather service records, making the outcome definitive and not subject to interpretation or dispute.