About this Market

Recent forecasts from models including GFS and ECMWF point to a meiyu (plum rain) front maintaining extensive cloud cover and scattered showers over Shanghai through June 23, limiting radiative cooling and holding the overnight low near 22°C—the market’s leading outcome at 34% implied probability. Persistent humidity and light easterly flow typical of the East Asian summer monsoon further compress the diurnal range, favoring 22–23°C readings while keeping odds for 17°C or below at 22% only if stronger northerly advection develops. Historical June climatology shows average lows of 21–23°C under similar conditions, with traders weighting the latest ensemble consensus and any NMC updates expected before resolution.