Trader consensus on Polymarket reflects high uncertainty in New York City-area forecast models for May 17 highs at LaGuardia Airport station, with no outcome exceeding 32% implied probability for 79°F or below amid diverging GFS and ECMWF runs showing a range from the upper 70s to upper 80s. Recent National Weather Service guidance points to partly cloudy conditions under weak high pressure, but key variables include cloud cover timing—thicker marine stratus could cap temperatures at 79°F or below via sea breeze reinforcement—while clearer skies and lighter winds favor 84-89°F bins via enhanced urban heating and subsidence. Upper 90s outcomes remain improbable (<1%) due to climatological rarity for mid-May (normal ~72°F) and lack of strong ridging. Watch for 00Z model updates and NWS evening discussion, which often sharpen short-range probabilities.