Trader sentiment leans toward a high of 56°F or higher in Chicago on March 24 at 46% implied probability, propelled by the National Weather Service's latest forecast pinpointing afternoon peaks near 58°F under a strengthening upper-level ridge ushering mild southerly flow over the Midwest. Ensemble guidance from GFS and ECMWF models shows convergence on above-normal 500 mb heights, outpacing seasonal norms where March 24 highs average 47°F historically. Recent soundings confirm dry air masses and light winds, minimizing convective interference, while 54-55°F (26.5%) and 52-53°F (21.5%) bins capture model spread from potential diurnal cloudiness. No cold frontal threats loom per 00Z updates, though exact peak timing adds residual uncertainty.