Recent forecasts from the National Weather Service and private models show Denver's overnight low on September 14 centering near 54–59°F amid a warm late-summer pattern with highs in the mid-80s and isolated thunderstorm chances. Clear skies and light winds would promote strong radiative cooling toward the lower end of that range or below, while increased cloud cover, higher dew points, or a passing disturbance could limit cooling and support readings in the upper 60s or warmer. The closely matched market-implied odds on both sub-59°F and 78°F+ outcomes reflect genuine model spread and timing uncertainty around any frontal passage or convective activity, with traders weighting the balance between typical September climatology (average low near 50°F) and the current above-normal warmth. New short-range model runs and evening observations will provide the next key updates.