Latest China Meteorological Administration guidance places Qingdao’s May 17 maximum near 20–21 °C under mostly cloudy conditions, yet Polymarket traders assign nearly equal weight to 22–24 °C outcomes. The city’s coastal setting on the Yellow Sea typically anchors daytime highs several degrees below inland Shandong values through marine air advection and afternoon sea breezes. Numerical weather models show modest spread in boundary-layer mixing and cloud cover, creating genuine uncertainty around whether peak readings will reach the mid-20s. Historical mid-May averages hover near 20–22 °C, so any brief clearing or southerly flow shift could nudge the high upward without violating climatological norms. Final resolution hinges on official station observations tomorrow.