National Weather Service forecasts and recent model consensus point to a daytime high near 64–65°F at San Francisco International Airport today, driven by moderate onshore flow from the Pacific that sustains the marine layer while allowing partial stratus burn-off under building high pressure. This setup keeps temperatures below the May climatological average of 67°F, with west winds of 15–20 mph limiting afternoon warming and favoring the 46.5% market-implied probability for the 64–65°F bin. Lingering low clouds or thicker advection could cap readings at 62–63°F, while clearer conditions support a narrower path to 66–67°F. Hourly surface observations and updated guidance through the afternoon will refine these ranges as resolution approaches.