Recent forecasts from sources including the China Meteorological Administration and global models indicate a likely daily high near 34°C in Guangzhou on September 9, supported by partly cloudy conditions and limited afternoon convection that has kept recent days at or above 33–35°C. Scattered showers or thunderstorms remain possible, with timing critical: early or widespread rain could suppress the peak below 34°C, while delayed or localized activity favors 35°C or higher under stronger subtropical ridge influence. Model spread between ECMWF, GFS, and regional guidance contributes to the broad trader distribution across 33–35°C outcomes. Historical September averages near 32.5°C and occasional late-summer peaks above 35°C provide context, though short-term steering patterns and humidity levels introduce notable uncertainty ahead of final observational data.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Guangzhou on September 9?
34°C 31%
35°C 21%
33°C 17%
37°C 17%
28°C or below
<1%
29°C
1%
30°C
3%
31°C
2%
32°C
7%
33°C
17%
34°C
31%
35°C
21%
36°C
6%
37°C
17%
38°C or higher
3%
34°C 31%
35°C 21%
33°C 17%
37°C 17%
28°C or below
<1%
29°C
1%
30°C
3%
31°C
2%
32°C
7%
33°C
17%
34°C
31%
35°C
21%
36°C
6%
37°C
17%
38°C or higher
3%
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=zggg
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 7, 2026, 12:58 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zgggResolver
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=zggg
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=zgggResolver
0x69c47De9D...Recent forecasts from sources including the China Meteorological Administration and global models indicate a likely daily high near 34°C in Guangzhou on September 9, supported by partly cloudy conditions and limited afternoon convection that has kept recent days at or above 33–35°C. Scattered showers or thunderstorms remain possible, with timing critical: early or widespread rain could suppress the peak below 34°C, while delayed or localized activity favors 35°C or higher under stronger subtropical ridge influence. Model spread between ECMWF, GFS, and regional guidance contributes to the broad trader distribution across 33–35°C outcomes. Historical September averages near 32.5°C and occasional late-summer peaks above 35°C provide context, though short-term steering patterns and humidity levels introduce notable uncertainty ahead of final observational data.
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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