Trader sentiment heavily favors 67°F or below at 72% implied probability for New York City's highest temperature at LaGuardia Airport on April 5, aligned with National Weather Service guidance and GFS/ECMWF ensemble consensus forecasting daytime highs around 63-67°F. Recent weather whiplash has ushered in a cool post-frontal airmass across the Northeast, with persistent low-level clouds, light rain chances, and northerly flow suppressing daytime heating after earlier warm spells topped upper 80s. Climatologically, early April highs average near 58°F, but current model runs show limited solar insolation and weak ridging preventing warmer outcomes. New 12z/00z forecast updates from NOAA models expected within 24 hours could adjust probabilities amid typical spring forecast uncertainty.