Recent National Weather Service and private model guidance, showing highs near seasonal norms of 83°F under mostly sunny conditions, underpins the 29% market-implied odds for an 84-85°F peak in New York City on August 17. Ensemble runs cluster tightly in the low-to-mid 80s, with limited heat advection or strong high pressure supporting modest upside to 86-87°F. Key variables include afternoon sea-breeze timing, which can cap temperatures along the coast, variable cloud cover from weak moisture return, and small differences in boundary-layer mixing across models. Traders weigh these against the low probability of 90°F-plus outcomes given the absence of anomalous ridging, while cooler 80°F-or-below scenarios remain possible if marine air arrives earlier than currently projected. Updated NWS and global model runs overnight will likely refine these ranges ahead of resolution.