Recent ensemble forecasts from global and regional models indicate a highest temperature of 29°C in Shanghai on September 24, driven by persistent easterly flow and mostly cloudy conditions that limit daytime heating in late September. Current observations show daily highs stabilizing near 28–30°C amid typical subtropical humidity and light winds, with no strong frontal systems or typhoon influences altering the pattern. This positions the 29°C outcome as the market leader at 54% implied probability, while 28°C and 30°C capture model spread and minor variations in cloud cover or insolation. Shanghai Meteorological Bureau updates and refined ECMWF/GFS runs over the next 48 hours will likely refine these probabilities ahead of resolution.
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 September 24?
29°C 54%
28°C 29%
30°C 15%
27°C 5%
24°C or below
<1%
25°C
<1%
26°C
2%
27°C
5%
28°C
29%
29°C
54%
30°C
15%
31°C
1%
32°C
1%
33°C
<1%
34°C or higher
<1%
29°C 54%
28°C 29%
30°C 15%
27°C 5%
24°C or below
<1%
25°C
<1%
26°C
2%
27°C
5%
28°C
29%
29°C
54%
30°C
15%
31°C
1%
32°C
1%
33°C
<1%
34°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=zspd
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 22, 2026, 12:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=zspd
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...Recent ensemble forecasts from global and regional models indicate a highest temperature of 29°C in Shanghai on September 24, driven by persistent easterly flow and mostly cloudy conditions that limit daytime heating in late September. Current observations show daily highs stabilizing near 28–30°C amid typical subtropical humidity and light winds, with no strong frontal systems or typhoon influences altering the pattern. This positions the 29°C outcome as the market leader at 54% implied probability, while 28°C and 30°C capture model spread and minor variations in cloud cover or insolation. Shanghai Meteorological Bureau updates and refined ECMWF/GFS runs over the next 48 hours will likely refine these probabilities ahead of 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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