Current forecast models for San Francisco on July 22 favor a moderate marine layer with onshore flow from the cold California Current, limiting daytime heating and supporting highs clustered in the low-to-mid 70s. This pattern produces a strong temperature inversion that caps mixing and sustains coastal stratus or fog into the afternoon at many stations, while slight variations in layer depth, wind strength, or high-cloud cover can shift peak readings by a few degrees. Trader consensus around 74–75°F reflects typical July climatology near official sites like SFO, where historical averages hover near 68–72°F but occasional marine-layer retreat allows brief warming; model spread and measurement criteria create the tight distribution across adjacent bins.