Between 20:28 and 21:33 on April 23, 2026, the price of the 60-61°F option plummeted from 36c to 19.5c. This was due to evening weather model updates indicating a slightly warmer expected high for the following day, shifting probability towards the higher 62-63°F range. Between 11:58 and 16:18 on April 22, 2026, the price of the 64-65°F option fell from 31c to 17c, caused by medium-range forecast adjustments that ruled out extreme warmer conditions.

From April 22 to April 24, 2026, the price of '72-73°F' surged from 12.5c to 36c, and '74°F or higher' spiked from 16c to 36.5c before settling at 24.5c, while '68-69°F' plummeted from 24.5c to 4c. This was driven by updated weather forecasts closer to the date that raised expected maximum temperatures, virtually ruling out the upper 60s in favor of warmer conditions in the 70s. From April 20 to April 22, 2026, amid early forecast uncertainty and gradual revisions, the '70-71°F' option absorbed funds initially directed at lower temperature ranges, resulting in a steady climb.

Predicting the daily high temperature in a specific city on a specific date is a relatively standard quantitative prediction event. While not as broadly appealing as politics or macroeconomics, it is common in weather prediction markets.

There is a moderate risk. The title mentions 'Denver', but the resolution rules specifically state the data source is the Buckley Space Force Base Station (KBKF) in Aurora. Temperatures at KBKF may differ slightly from downtown Denver or Denver International Airport. Traders who fail to read the rules carefully and use the wrong weather station for forecasting could fall into a trap.

April 22, 2026 - April 24, 2026, the price of the 70-71°F option surged from 23.5c to 44.5c, while the 72-73°F option climbed from 5.5c to 29c. Conversely, the 68-69°F option dropped from 34c to 17.5c, and the 66-67°F option plummeted from 18.5c to 1.5c. These significant price movements reflect updated weather forecasts as the target date arrives, with anticipated high temperatures shifting distinctly upward compared to earlier expectations.