Istanbul experiences variable spring weather in April, with temperatures typically ranging from cool mornings to mild afternoons. This prediction market asks whether April 20, 2026 will be exceptionally cold—whether Istanbul's highest temperature will reach 9°C or below. Such conditions would be notably unusual for this time of year, where April typically averages daytime highs around 15-18°C. The market currently shows 0% odds for YES, indicating trader consensus that temperatures will substantially exceed this threshold. This probability reflects confidence in typical spring weather patterns and near-zero chance of extreme cold materializing. The market resolves based on verified data from Istanbul's primary meteorological stations, making it objectively measurable. With $5,170 in liquidity and $896 in daily volume, this remains a niche market for weather traders positioning on tail-risk scenarios.