Recent National Weather Service forecasts for San Francisco on June 20 point to a high near 67–70°F under persistent onshore flow and marine layer influence typical of June, supporting the market's leading 68–69°F outcome at 29.5% implied probability. Key variables include the depth and timing of coastal stratus and fog, which cap afternoon warming; wind speed and direction from the Pacific, favoring cooler advection; and any short-term shifts in the thermal inversion or upper-level ridging that could allow brief clearing and modest warming to 70–71°F. Historical climatology shows June maxima averaging in the mid-60s at SFO, with microclimate variations across the city adding resolution uncertainty.