April 20 marks the transition into late spring in Paris, when daily high temperatures typically range from 15 to 18 degrees Celsius. This market focuses on whether the recorded high for that day will be exactly 17°C, a specific outcome that makes resolution straightforward through official Météo-France data, which publishes daily temperature readings for the capital. At current odds of 13% for a YES resolution, the market reflects the precision required: hitting 17°C exactly means the daily high cannot be 16°C, 17.5°C, or 18°C—this narrow window explains the lower probability. Weather systems for late April across Northern Europe remain uncertain, with both cooler Arctic air masses and warmer Atlantic patterns competing for influence. This meteorological variability drives volatility in prediction markets tracking exact temperatures. The specificity of this market—compared to broader range-based temperature markets—results in lower probability pricing, as exact matches become increasingly difficult to predict as resolution approaches. Similar daily temperature markets have seen significant price swings based on updated forecast models as the event date nears. Resolution is determined by Météo-France's officially recorded daily maximum temperature for Paris on April 20.