Chicago's daily maximum temperature on April 20, 2026 will be determined by real-time weather data from the National Weather Service. The question asks whether the high will reach or exceed 74°F—a mild threshold for late April in the Midwest region. Current market odds of 0% YES suggest traders expect temperatures to fall below this level, potentially due to cooler weather patterns forecasted for that date or the market's overall skepticism about reaching that specific threshold. Chicago's typical April high ranges from 55–65°F, so 74°F would represent notably warmer conditions than the seasonal average. The market will resolve at midnight UTC on April 20, 2026, based on official NWS data for the Chicago-O'Hare area or other standard weather reporting stations serving the city. This daily temperature market is part of a recurring series where conditions change significantly day-to-day, making each prediction sensitive to short-term forecasts and current atmospheric conditions in the region. The extreme low odds suggest the market is pricing in below-normal temperatures or high confidence in a cool day ahead, reflecting broader expectations for spring weather patterns in the Midwest.