Los Angeles experiences variable spring temperatures in mid-April, typically ranging from the mid-60s to mid-70s Fahrenheit depending on weather systems moving through Southern California. This market focuses on whether the highest temperature recorded in LA on April 18, 2026, falls within the specific 66-67°F range. The question is definitively resolvable, as daily high temperatures are measured consistently by meteorological standards and published by official weather services across Los Angeles County. The current market odds showing 0% YES suggests traders believe April 18's high will fall outside this narrow two-degree window—either lower, indicating cooler spring conditions, or higher, suggesting warmer conditions moving in from the desert. Historical April data for Los Angeles shows considerable variance, with highs ranging from the low 60s to low 80s depending on atmospheric pressure systems and seasonal warming patterns. The extremely low probability assigned to this outcome indicates this specific temperature band is considered highly unlikely by the market, perhaps reflecting current seasonal expectations or near-term forecast guidance suggesting a notably different high. Temperature markets are among the most objectively resolvable prediction markets, as outcomes depend entirely on measurable physical data with no ambiguity in interpretation or dispute resolution.