Official temperature records from National Weather Service stations confirm Denver reached a high of at least 68°F on June 2, establishing the market-implied probability at 100% for that outcome. This aligns with early June climatology, when typical afternoon maxima under clear or partly cloudy skies often exceed the mid-60s, driven by solar heating and regional pressure patterns. Lower brackets retain negligible odds because verified observations show no support for cooler conditions. Forecast model runs from preceding days had already indicated warming trends, with minimal uncertainty in final readings. While instrument calibration checks or rare post-analysis revisions remain theoretically possible, they have not altered comparable historical data sets.