Recent forecasts from multiple meteorological models indicate Zhengzhou will experience overcast skies and possible light morning drizzle or showers on September 17, limiting solar heating and capping daytime highs near 23–25°C. This cooler pattern follows warmer conditions earlier in the week and aligns with seasonal transition toward autumn, when average September highs decline from the mid-20s°C. Low-level cloud cover, light variable winds, and modest moisture advection from the south are suppressing temperature recovery, with official guidance converging on maxima well below late-summer norms. The market’s heavy weighting toward 22°C or below reflects trader assessment of these atmospheric conditions and limited upside potential absent rapid clearing. Updated model runs and surface observations over the next 24 hours will provide the final inputs for 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 17?
22°C or below 98%
25°C 40%
23°C 39%
24°C 39%
22°C or below
98%
23°C
39%
24°C
39%
25°C
40%
26°C
8%
27°C
3%
28°C
3%
29°C
2%
30°C
2%
31°C
4%
32°C or higher
3%
22°C or below 98%
25°C 40%
23°C 39%
24°C 39%
22°C or below
98%
23°C
39%
24°C
39%
25°C
40%
26°C
8%
27°C
3%
28°C
3%
29°C
2%
30°C
2%
31°C
4%
32°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=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 16, 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...Recent forecasts from multiple meteorological models indicate Zhengzhou will experience overcast skies and possible light morning drizzle or showers on September 17, limiting solar heating and capping daytime highs near 23–25°C. This cooler pattern follows warmer conditions earlier in the week and aligns with seasonal transition toward autumn, when average September highs decline from the mid-20s°C. Low-level cloud cover, light variable winds, and modest moisture advection from the south are suppressing temperature recovery, with official guidance converging on maxima well below late-summer norms. The market’s heavy weighting toward 22°C or below reflects trader assessment of these atmospheric conditions and limited upside potential absent rapid clearing. Updated model runs and surface observations over the next 24 hours will provide the final inputs for resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions