Forecast models from sources including the Global Forecast System indicate a minimum temperature in Shanghai on September 11 most likely between 22–24°C under mostly cloudy skies with light northeast winds and a modest chance of showers. This range aligns with the market’s leading outcomes at 23°C (41%), 24°C (24%), and 22°C (23.5%), reflecting trader consensus on typical early-autumn cooling in the region’s humid subtropical climate, where overnight radiative losses are moderated by high humidity and cloud cover. Recent model runs show stable steering patterns without strong cold-air intrusions, though minor forecast revisions could shift the exact low within this narrow band 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 September 11?
23°C 39%
24°C 25%
22°C 24%
25°C 12%
19°C or below
1%
20°C
1%
21°C
7%
22°C
24%
23°C
39%
24°C
25%
25°C
12%
26°C
11%
27°C
1%
28°C
1%
29°C or higher
1%
23°C 39%
24°C 25%
22°C 24%
25°C 12%
19°C or below
1%
20°C
1%
21°C
7%
22°C
24%
23°C
39%
24°C
25%
25°C
12%
26°C
11%
27°C
1%
28°C
1%
29°C or higher
1%
The resolution source for this market will be information from NOAA, specifically the lowest 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 9, 2026, 12:29 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 lowest 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...Forecast models from sources including the Global Forecast System indicate a minimum temperature in Shanghai on September 11 most likely between 22–24°C under mostly cloudy skies with light northeast winds and a modest chance of showers. This range aligns with the market’s leading outcomes at 23°C (41%), 24°C (24%), and 22°C (23.5%), reflecting trader consensus on typical early-autumn cooling in the region’s humid subtropical climate, where overnight radiative losses are moderated by high humidity and cloud cover. Recent model runs show stable steering patterns without strong cold-air intrusions, though minor forecast revisions could shift the exact low within this narrow band 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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