Forecast models from sources including the China Meteorological Administration and international ensembles indicate partly cloudy conditions over Guangzhou on September 18, with light northeast or southeast winds of 1–3 m/s and only a low chance of brief showers. These factors support afternoon heating toward 33–34 °C, near or slightly above the late-September climatological average of 31.8 °C, though urban heat-island effects in the densely built core could add 1–2 °C locally. Trader emphasis on 35 °C reflects the potential for clearer intervals or model runs showing marginally stronger subsidence, while lower outcomes remain viable if increased cloud cover or earlier precipitation develops. Final resolution depends on official station readings, with new model updates expected within 24 hours.
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 18?
35°C 43%
34°C 19%
36°C 16%
33°C 11%
28°C or below
<1%
29°C
2%
30°C
1%
31°C
2%
32°C
5%
33°C
11%
34°C
19%
35°C
34%
36°C
16%
37°C
7%
38°C or higher
<1%
35°C 43%
34°C 19%
36°C 16%
33°C 11%
28°C or below
<1%
29°C
2%
30°C
1%
31°C
2%
32°C
5%
33°C
11%
34°C
19%
35°C
34%
36°C
16%
37°C
7%
38°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=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 16, 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...Forecast models from sources including the China Meteorological Administration and international ensembles indicate partly cloudy conditions over Guangzhou on September 18, with light northeast or southeast winds of 1–3 m/s and only a low chance of brief showers. These factors support afternoon heating toward 33–34 °C, near or slightly above the late-September climatological average of 31.8 °C, though urban heat-island effects in the densely built core could add 1–2 °C locally. Trader emphasis on 35 °C reflects the potential for clearer intervals or model runs showing marginally stronger subsidence, while lower outcomes remain viable if increased cloud cover or earlier precipitation develops. Final resolution depends on official station readings, with new model updates expected within 24 hours.
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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