Current forecast models from the National Weather Service and major ensembles indicate an overnight low in the low-to-mid 60s Fahrenheit for New York City on May 18, driven by a mild maritime air mass, light variable winds, and limited radiative cooling under partly cloudy skies. Small differences among guidance runs—primarily in cloud cover timing and boundary-layer moisture—separate the tightly clustered leading outcomes, with 62–67°F capturing the bulk of probability as the dominant range. Historical May climatology shows typical overnight minima near 55°F, so the warmer signal reflects above-average temperatures persisting through the period. Updated model runs and local observations over the next 48 hours will refine the exact minimum before resolution.