Recent NOAA and NWS forecast ensembles point to a high-pressure ridge building over the Four Corners region as the primary driver pushing trader odds toward warmer outcomes, with 34% implying 80°F or higher in Denver on March 28 despite consensus highs near 72°F. This setup favors downslope chinook winds that historically spike Front Range temperatures 10-20°F above normals in late March, as seen in prior years like 2023's 83°F peak. However, high uncertainty stems from model divergences—GFS trends hotter with clear skies, while ECMWF introduces cloudier scenarios capping at 68-73°F—plus risks from any upstream frontal timing or diurnal mixing limits. Traders weigh these against March's volatile baseline average of 57°F.