NWS and ECMWF deterministic models consistently project Chicago's May 6 high to reach mid-60s, averaging 64-65°F. No synoptic setup supports a 58-59°F peak. Ensemble means are elevated. 95% NO — invalid if unforeseen nocturnal cold advection dramatically alters boundary layer temps.
NWS and ECMWF deterministic models consistently project Chicago's May 6 high to reach mid-60s, averaging 64-65°F. No synoptic setup supports a 58-59°F peak. Ensemble means are elevated. 95% NO — invalid if unforeseen nocturnal cold advection dramatically alters boundary layer temps.