Seattle's weather on April 20 can be unpredictable, with spring conditions often bringing variable temperatures. This market tracks whether the city's highest temperature will fall within the narrow range of 56-57°F on that specific date. The question is highly resolvable using official National Weather Service data from Seattle-Tacoma International Airport, the standard measurement location for the region. Current odds at 0% suggest traders believe this narrow temperature band is unlikely to occur on April 20, implying expectations for either warmer or cooler conditions. Spring temperatures in Seattle typically range from 50-65°F during this period, making 56-57°F a realistic but specific outcome. The market's low liquidity indicates limited trader interest in this exact temperature range, with most activity likely concentrated in broader temperature bands. As the date approaches, odds may shift based on updated weather forecasts that sharpen prediction confidence. This recurring daily temperature market allows traders to assess their understanding of seasonal Seattle weather patterns against market consensus.