**Forecast models from the National Weather Service and local outlets like Denver7 currently project an overnight low near 61°F for Denver on September 7, 2026, with scattered thunderstorms, a high around 89°F, and moderate cloud cover.** This aligns with recent observations showing above-average warmth early in the month (highs in the low 90s, lows in the upper 50s to low 60s) amid a warmer-than-normal pattern. Key scientific drivers include radiational cooling under partly to mostly cloudy skies versus clearer conditions that would enhance nighttime temperature drops; thunderstorm timing and coverage, which can mix the boundary layer or introduce cooler air aloft; and steering patterns that maintain a southerly flow with limited cold-air advection. Historical September 7 lows average 52.8°F, but 2026 conditions reflect persistent warmth, reducing the likelihood of sub-60°F readings unless models trend cooler with increased precipitation or clearer post-storm skies. Trader consensus reflects this uncertainty: the 59°F-or-below outcome leads at 34.5% implied probability due to potential model shifts or heavier rain cooling, while the 78°F-or-higher bin at 29.5% captures tail-risk warmth scenarios. Mid-range bins (e.g., 60–67°F) cluster near 24–25%, consistent with the narrow forecast spread around 60–63°F. Updated NWS model runs and local observations over the next 48 hours will be the primary catalysts for any probability shifts.