Mexico City's April climatological mean daily maximum is ~27°C. A 16°C high represents a significant negative thermal anomaly, nearly a 3-sigma deviation from historical isotherm data. Current ensemble guidance for late April shows no robust synoptic pattern indicating the requisite cold air advection or persistent cloud cover to suppress temperatures that drastically. Daily maximum will comfortably exceed 16°C. 98% YES — invalid if a severe, persistent cold front with significant precipitation stalls over the Valley of Mexico.
Mexico City's April climatological mean daily maximum is ~27°C. A 16°C high represents a significant negative thermal anomaly, nearly a 3-sigma deviation from historical isotherm data. Current ensemble guidance for late April shows no robust synoptic pattern indicating the requisite cold air advection or persistent cloud cover to suppress temperatures that drastically. Daily maximum will comfortably exceed 16°C. 98% YES — invalid if a severe, persistent cold front with significant precipitation stalls over the Valley of Mexico.
