Recent National Weather Service and private model guidance points to a Seattle high temperature on June 10 in the low-to-mid 60s, driven by persistent onshore flow and a strengthening marine layer that limits afternoon heating. Stratus clouds and light southerly winds off Puget Sound are expected to keep surface readings several degrees below the June climatological average of 69–72 °F. Ensemble spreads remain tight, with minor differences in cloud-break timing and boundary-layer mixing determining whether the daily maximum settles at 62–63 °F or edges into the 64–65 °F range; a brief period of clearer skies could allow the higher bracket while sustained marine stratus would favor the lower. No significant warm-air advection or downslope flow is forecast to push readings into the upper 60s.