Verified observational data from the LaGuardia Airport (KLGA) station, as reported by Weather Underground, recorded New York City's highest temperature on April 14, 2026, at 84-85°F, driving unanimous trader consensus with 100% implied probability on that outcome. This peak resulted from a potent high-pressure ridge promoting southerly warm air advection, yielding unseasonably hot conditions well above the mid-April climatological average of 61°F and nearing daily records around 89°F. NOAA's Automated Surface Observing System measurements, corroborated by nearby Central Park reports near 83°F, provide robust evidence via calibrated sensors tracking hourly maxima. Scenarios challenging this include rare post-processing revisions for equipment calibration or data glitches in the final National Weather Service climatological summary, expected within 24 hours.