A strong European heat dome has driven temperatures well above seasonal norms across northern France, with Paris forecast to peak in the upper 30s °C on June 22 amid clear skies, light winds, and intense solar insolation. Official guidance from Météo-France and ensemble runs from ECMWF show consensus around 38–39 °C, consistent with the heatwave’s multi-day persistence and urban heat-island amplification in the city center. Market-implied odds cluster tightly on these values because small differences hinge on exact peak-hour timing, minor cloud intrusions, or boundary-layer mixing—factors that short-range models resolve with limited spread. Higher outcomes near 40–41 °C remain plausible if the ridge strengthens or downslope warming intensifies, while probabilities drop sharply below 37 °C given the entrenched warm air mass and absence of cooling advection in current guidance.