Official National Weather Service observations at Austin Bergstrom International Airport recorded a maximum of 98°F on September 25, 2026, under clear skies with light easterly winds that permitted strong daytime heating well above the 89°F seasonal normal. Persistent late-summer warmth across a record-hot September, featuring multiple days above 98°F and minimal cloud cover or precipitation, drove trader consensus toward the 96-97°F bucket. Model guidance and surface observations aligned closely with this range before final verification. Any resolution shift would require substantial post-analysis revisions to the official climate summary, an uncommon outcome once preliminary data are released.