Trader consensus on Polymarket heavily favors 72°F or higher (83.5%) for Los Angeles' highest temperature on April 18, driven by the latest National Weather Service forecasts from the Los Angeles/Oxnard office projecting daytime highs near 78°F amid dry, warmer conditions. This positioning stems from a building upper-level ridge over the West Coast promoting subsidence and reduced marine layer influence, allowing greater solar heating after recent showers tapered off midweek. GFS and ECMWF model ensembles have converged on this pattern in runs over the past 48 hours, shifting probabilities upward from earlier cooler outlooks. While coastal stratus could temper peaks to the low 70s, low probabilities for sub-72°F outcomes reflect strong agreement on above-normal temperatures typical for mid-April baselines around 72°F. Watch NWS updates this evening for refined guidance ahead of resolution at official downtown Los Angeles stations.