Current numerical weather forecasts for Denver on September 3, 2026, point to a minimum temperature near 56–62°F under mostly clear skies following daytime highs in the mid-to-upper 80s. This aligns closely with climatological norms (average low ~54°F) but sits amid notable model uncertainty at a 48-hour lead time. Key differentiating factors include nocturnal radiative cooling efficiency under dry high-plains conditions, boundary-layer wind mixing from Front Range downslope flows, and potential shifts in synoptic advection—cooler northerly air or warmer southerly return flow could readily push the overnight low below 53°F or above 72°F. Ensemble spread in guidance such as GFS and ECMWF sustains the near-even market split between those extremes while mid-range bins reflect the baseline expectation. Updated model runs and National Weather Service briefings over the next 24 hours will likely narrow the implied probabilities.