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.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Shanghai on June 23?
22°C 100.0%
17°C or below <1%
18°C <1%
19°C <1%
$26,890 Vol.
$26,890 Vol.
17°C or below
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C or higher
No
22°C 100.0%
17°C or below <1%
18°C <1%
19°C <1%
$26,890 Vol.
$26,890 Vol.
17°C or below
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 21, 2026, 12:30 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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