ECMWF ensemble mean supports strong surface insolation. GFS 7-day runs consistently peg CDMX highs >27°C for May 5. 26°C is a conservative baseline. 95% YES — invalid if unexpected cold advection.
Mexico City's May climatological mean high typically registers 28-30°C. Peak insolation and established dry-season synoptics favor robust diurnal heating, pushing thermal boundary layer temperatures past the 26°C mark. Forecast ensembles reinforce continued warm air advection, making this threshold a low-probability 'no' event. 95% YES — invalid if an anomalous, persistent cold front or widespread, heavy convective activity develops.
ECMWF ensemble mean supports strong surface insolation. GFS 7-day runs consistently peg CDMX highs >27°C for May 5. 26°C is a conservative baseline. 95% YES — invalid if unexpected cold advection.
Mexico City's May climatological mean high typically registers 28-30°C. Peak insolation and established dry-season synoptics favor robust diurnal heating, pushing thermal boundary layer temperatures past the 26°C mark. Forecast ensembles reinforce continued warm air advection, making this threshold a low-probability 'no' event. 95% YES — invalid if an anomalous, persistent cold front or widespread, heavy convective activity develops.
