Trader consensus for Seattle's peak temperature on June 29 clusters tightly around 66–69°F, driven by the latest National Weather Service and NOAA model runs showing a moderating onshore marine layer and weak high pressure that limits daytime heating. Ensemble guidance indicates afternoon highs near 67–68°F amid possible morning cloud cover and light westerly flow off the cool Pacific, consistent with late-June climatology where Seattle averages around 72°F but often sees cooler outcomes under similar patterns. Uncertainty remains from model spread on exact cloud timing and any late-day clearing, which could push readings into the low 70s or hold them in the mid-60s.