Current National Weather Service guidance places a heat advisory over the San Francisco Bay Area for June 11, with forecast highs near 73–77 °F driven by suppressed marine-layer clouds and warming aloft. This setup creates uncertainty in peak readings, as small shifts in onshore flow or fog timing can swing the daily maximum by several degrees. Climatologically, early-June highs average 67 °F, so the present pattern already exceeds baseline; model consensus shows limited further intensification potential before sunset. Traders therefore assign roughly 59 % combined probability to the 82–85 °F bins while leaving meaningful weight on 81 °F or below, reflecting the narrow window between forecast guidance and real-time observational variance at official reporting sites.