Recent National Weather Service guidance for Denver on October 1 projects a daytime high near 63°F under partly to mostly cloudy skies with a 50% chance of showers, driven by a lingering frontal boundary and northerly flow. Ensemble model runs show modest spread, with some solutions supporting highs in the mid-to-upper 60s if clouds break earlier or mixing is stronger than expected. This uncertainty, combined with typical early-October variability in the Front Range where diurnal ranges average 25–30°F, underpins the market’s concentration on the 64–69°F bins. Updated model cycles and any observed warming trends in the next 48 hours will likely refine these implied probabilities ahead of resolution.