Miami's daily high temperature on April 20 offers a measurable prediction point during spring transition season. The National Weather Service provides official high temperatures daily for Miami, making this market objectively resolvable based on a single, verifiable data point. An 84-85°F high would represent typical spring warmth for South Florida, falling comfortably between cooler frontal passages and the pre-summer heat waves that characterize late May and June. The current 41% probability suggests roughly 2-in-5 odds the high lands precisely within this narrow 2-degree window—traders view this as moderately unlikely but certainly plausible. Historical April weather in Miami typically sees daily highs in the mid-80s Fahrenheit, though temperature variability increases as the month progresses and tropical systems or cold air masses move closer to the region. The market's 24-hour volume of $2,379 reflects steady interest in daily weather prediction trading. Resolution depends entirely on the official National Weather Service high temperature reading recorded for Miami International Airport on April 20. As market close approaches at midnight UTC, odds tend to tighten progressively toward the most recent National Weather Service forecast, which updates every 6 hours through market expiration.