Recent forecasts from multiple models place Chengdu's September 17 maximum near 24–26°C amid persistent cloud cover, scattered showers, and light easterly winds typical of early autumn in the Sichuan Basin. This pattern, driven by regional moisture and weak steering flow, limits daytime heating and produces the tight clustering of market-implied odds around 25–27°C. Ensemble spreads reflect uncertainty in exact cloud timing and rainfall amounts, which can shift the peak by 1–2°C. Official readings from local stations will resolve the market once the day ends, with any late clearing potentially pushing values toward the upper end of the favored range.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chengdu on September 17?
26°C 34%
27°C 27%
25°C 18%
28°C 15%
$12,940 Vol.
$12,940 Vol.
21°C or below
<1%
22°C
2%
23°C
3%
24°C
7%
25°C
18%
26°C
34%
27°C
27%
28°C
15%
29°C
3%
30°C
<1%
31°C or higher
<1%
26°C 34%
27°C 27%
25°C 18%
28°C 15%
$12,940 Vol.
$12,940 Vol.
21°C or below
<1%
22°C
2%
23°C
3%
24°C
7%
25°C
18%
26°C
34%
27°C
27%
28°C
15%
29°C
3%
30°C
<1%
31°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=zuuu
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 15, 2026, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zuuuResolver
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=zuuu
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=zuuuResolver
0x69c47De9D...Recent forecasts from multiple models place Chengdu's September 17 maximum near 24–26°C amid persistent cloud cover, scattered showers, and light easterly winds typical of early autumn in the Sichuan Basin. This pattern, driven by regional moisture and weak steering flow, limits daytime heating and produces the tight clustering of market-implied odds around 25–27°C. Ensemble spreads reflect uncertainty in exact cloud timing and rainfall amounts, which can shift the peak by 1–2°C. Official readings from local stations will resolve the market once the day ends, with any late clearing potentially pushing values toward the upper end of the favored range.
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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