Clear skies, light southerly winds, and very dry air across the Denver metro area are driving efficient radiational cooling overnight into October 4, with National Weather Service guidance and ensemble models showing the daily minimum likely occurring near dawn. Recent observations place early-morning temperatures in the low-to-mid 50s, consistent with climatological patterns for early October under high pressure but slightly above the long-term average low of 41.6 °F. Trader sentiment remains tightly split between the 48–49 °F and 46–47 °F bins because small differences in wind speed, dew-point depression, or urban heat-island effects can shift the exact minimum by a degree or two before official recording stations finalize the day’s low. Updated model runs later today will narrow that uncertainty.