**Recent hot, humid conditions and typical summer nighttime patterns in Miami are anchoring trader expectations for the August 20 overnight low near 78–83°F, with the three leading bins (80–81°F at 35%, 82–83°F at 28.5%, and 78–79°F at 27.5%) reflecting narrow forecast spreads amid ongoing record warmth.** August climatology sets a baseline average low near 78°F, rarely dipping below 74°F, while recent observations show minimums of 78–81°F amid a heat wave that produced daily highs of 95–98°F and broke a 1909 record. Persistent tropical moisture, scattered afternoon thunderstorms, and limited nocturnal radiative cooling under partly cloudy skies are keeping overnight temperatures elevated, consistent with National Weather Service guidance projecting lows around 80–81°F. Model consensus from sources like AccuWeather and local forecasts clusters in the upper 70s to low 80s, with minor variations driven by exact thunderstorm timing, wind speeds, and urban heat effects at the official observation site. The tight market distribution captures this uncertainty in short-range model runs and steering patterns, while lower-probability outcomes below 78°F or above 83°F would require an atypical cold surge or stronger mixing—scenarios not supported by current data or seasonal analogs. Updated National Weather Service briefings and model runs over the next 24 hours will be the key catalysts for any shifts.