Current forecast guidance from the National Weather Service and ensemble models points to a mild overnight low in New York City on May 19 driven by persistent high-pressure ridging across the Northeast. This pattern promotes subsidence that suppresses cloud formation and limits nocturnal radiative cooling, keeping surface temperatures from dropping below the mid-60s under partly cloudy skies. Historical May climatology shows typical overnight lows near 55 °F, but the current synoptic setup favors values several degrees warmer, which aligns with the tight clustering of market-implied probabilities around 64–69 °F. Updated model runs expected in the next 24–48 hours will refine the exact minimum and any potential for localized cooling if cloud cover increases.