Forecast models from agencies like the China Meteorological Administration point to a Shanghai high near 30–31°C on June 19, 2026, amid the East Asian monsoon’s mei-yu (plum rain) regime, which sustains cloud cover, high humidity, and scattered thunderstorms that cap daytime heating. Early June warmth across the Yangtze River Delta has lifted baselines above the 27–30°C climatological average, yet persistent moisture and variable steering patterns create tight uncertainty between these two outcomes. Recent model runs show minor spread in boundary-layer moisture and timing of convective cells, directly supporting the closely matched market-implied odds at 29% and 25.5% while keeping 28°C and 32°C viable depending on exact rainfall timing.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Shanghai on June 19?
31°C 100.0%
24°C or below <1%
25°C <1%
26°C <1%
$264,457 Vol.
$264,457 Vol.
24°C or below
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
Yes
32°C
No
33°C
No
34°C or higher
No
31°C 100.0%
24°C or below <1%
25°C <1%
26°C <1%
$264,457 Vol.
$264,457 Vol.
24°C or below
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
Yes
32°C
No
33°C
No
34°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest 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 17, 2026, 1:01 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 highest 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
Forecast models from agencies like the China Meteorological Administration point to a Shanghai high near 30–31°C on June 19, 2026, amid the East Asian monsoon’s mei-yu (plum rain) regime, which sustains cloud cover, high humidity, and scattered thunderstorms that cap daytime heating. Early June warmth across the Yangtze River Delta has lifted baselines above the 27–30°C climatological average, yet persistent moisture and variable steering patterns create tight uncertainty between these two outcomes. Recent model runs show minor spread in boundary-layer moisture and timing of convective cells, directly supporting the closely matched market-implied odds at 29% and 25.5% while keeping 28°C and 32°C viable depending on exact rainfall timing.
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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Frequently Asked Questions