Trader consensus centers on marine layer dynamics and onshore flow expected to moderate San Francisco's peak temperature tomorrow, with model spreads producing closely matched probabilities around the seasonal 68°F average. Cool Pacific waters sustain a temperature inversion that caps daytime warming, while the layer's depth—governed by subtropical high pressure and sea breeze strength—determines whether afternoon highs reach the upper 60s or remain lower; stronger northwest winds typically deepen stratus and suppress readings by several degrees. Official guidance from NOAA and NWS short-range ensembles shows limited warming potential absent a clear marine push retreat, explaining the tight distribution between 66–69°F bins versus lower odds for 70°F-plus outcomes. Updated model runs overnight will likely refine these thresholds ahead of resolution.