Trader sentiment for San Francisco’s August 2 high temperature centers on National Weather Service forecasts calling for sunny skies and highs near 77–78°F amid a gradual warming trend through the weekend. A strong upper-level ridge and reduced marine-layer influence are allowing interior heat to build modestly while light onshore winds keep coastal moderation in check, pushing daytime maxima into the mid-70s rather than the seasonal 68–70°F average. Model consensus supports this range, with minor differences in timing of any afternoon sea breeze or subtle offshore flow creating the tight clustering around 76–79°F outcomes. Historical August data show highs rarely exceed 79°F without stronger ridging, reinforcing the low probabilities assigned to 80°F-plus scenarios. Updated NWS briefings and afternoon model runs remain the key near-term catalysts.