Current meteorological observations and model consensus for Zhengzhou on September 13 indicate an afternoon high near 30°C under mostly overcast skies with light westerly winds and low precipitation risk. Multiple forecast runs, including GFS data, project daytime maxima of 28–30°C, aligning closely with seasonal September averages and recent station readings in the 28–29°C range. This supports the market's overwhelming 99.8% implied probability for exactly 30°C as the official daily high. Only substantial deviations—such as rapid clearing skies boosting insolation or localized measurement adjustments—could realistically shift the outcome toward 31°C or higher, though current conditions make such changes improbable before 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 Zhengzhou on September 13?
30°C 99.8%
32°C or higher <1%
31°C <1%
22°C or below <1%
$5,893 Vol.
$5,893 Vol.
22°C or below
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
100%
31°C
<1%
32°C or higher
1%
30°C 99.8%
32°C or higher <1%
31°C <1%
22°C or below <1%
$5,893 Vol.
$5,893 Vol.
22°C or below
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
100%
31°C
<1%
32°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=zhcc
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 12, 2026, 12:55 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zhccResolver
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=zhcc
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=zhccResolver
0x69c47De9D...Current meteorological observations and model consensus for Zhengzhou on September 13 indicate an afternoon high near 30°C under mostly overcast skies with light westerly winds and low precipitation risk. Multiple forecast runs, including GFS data, project daytime maxima of 28–30°C, aligning closely with seasonal September averages and recent station readings in the 28–29°C range. This supports the market's overwhelming 99.8% implied probability for exactly 30°C as the official daily high. Only substantial deviations—such as rapid clearing skies boosting insolation or localized measurement adjustments—could realistically shift the outcome toward 31°C or higher, though current conditions make such changes improbable 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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