**Trader sentiment for the lowest temperature in Paris on August 4, 2026, centers on 20–22°C outcomes because short-range forecast models indicate a continuation of above-average overnight warmth amid an early-August warm spell.** Climatological norms place typical minimums near 15–16°C, but current conditions feature elevated temperatures from southerly or southwesterly flow and high pressure suppressing strong radiative cooling overnight. Recent model runs have kept projected lows in the 20–22°C range, with limited cooling from clouds, humidity, or light winds preventing drops toward seasonal baselines. The closely bunched probabilities around 21°C (34%), 22°C (27.5%), and 20°C or below (24.5%) reflect genuine ensemble spread in guidance on the exact timing and strength of any subtle cooling influences, such as minor Atlantic moisture or wind shifts, rather than a single dominant driver. Warmer tails above 23°C remain low-probability given the current pattern, while colder scenarios would require an unexpected frontal passage or clearer skies not currently favored. Updated model runs and official guidance from agencies like Météo-France will likely refine these thresholds as the date approaches.