This prediction market asks whether Chicago's highest temperature on May 2, 2026, will fall within the narrow band of 36-37°F. Currently trading at 0% YES odds, the market reflects strong trader conviction that this outcome is virtually impossible to occur. In early May, Chicago typically experiences rapid spring warming, with average highs in the mid-60s to low-70s°F range, making a high of 36-37°F exceptionally rare and unusual for this time of year. The market settles based on the National Weather Service's official recorded high temperature for Chicago on that date. The extreme odds suggest traders expect well-above-freezing temperatures throughout the day, entirely consistent with typical seasonal spring patterns across the Midwest. A temperature of 36-37°F would require an unusual late-season cold snap to push deep into the central United States, overriding the normal spring warming trend.
Deep dive — what moves this market
Chicago's climate during early May shows a pronounced warming trajectory as spring deepens and solar forcing strengthens. Historical weather records for the city document average highs around 65-70°F during early May, with overnight lows typically settling in the mid-40s to low-50s°F range. For the market to resolve YES, Chicago would need to experience a high temperature of exactly 36-37°F, representing a dramatic deviation from seasonal expectations and statistical norms. Such conditions would require either a powerful arctic cold front to surge unusually far south or a blocked weather pattern that prevents solar heating from moderating overnight cold—both increasingly rare occurrences as May progresses and the jet stream migrates northward. Examining historical records for May 2 specifically across decades of Chicago weather data reveals that the coldest high temperatures for this date typically fall in the 40s to 50s°F range, substantially above the 36-37°F threshold this market specifies. The market's zero odds reflect both the statistical improbability of such cold conditions and the additional constraint of hitting an extremely narrow one-degree temperature band. Even if an unusual cold spell were to develop, achieving precision within this tight range would be difficult—readings of 35°F or 38°F would result in NO resolution despite representing exceptional May weather. Traders assigning zero probability likely view this as a combination of seasonal climatological improbability, the rarity of late-season arctic intrusions by early May, and the mathematical unlikelihood of landing within such a narrow temperature window. The market functions as a directional weather prediction with an exceptionally high specificity threshold.
