Latest forecast models from agencies like the China Meteorological Administration indicate mild overnight conditions for Zhengzhou on September 19, driving the 42% implied probability on a low of 25°C or higher. This reflects warmer-than-average advection ahead of any frontal passage, with ensemble guidance showing limited cooling potential under persistent southerly flow. Historical September lows in the region average near 18–20°C, but current observational trends and short-range runs favor elevated minima unless a stronger cold surge materializes. Key resolution hinges on the official daily minimum recorded at the Zhengzhou station, with traders closely monitoring the next model update cycles for any shift in steering patterns or cloud cover that could alter radiative cooling overnight.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Zhengzhou on September 19?
25°C or higher 88%
18°C 48%
15°C or below 28%
16°C 22%
15°C or below
28%
16°C
22%
17°C
22%
18°C
27%
19°C
22%
20°C
21%
21°C
21%
22°C
21%
23°C
18%
24°C
18%
25°C or higher
88%
25°C or higher 88%
18°C 48%
15°C or below 28%
16°C 22%
15°C or below
28%
16°C
22%
17°C
22%
18°C
27%
19°C
22%
20°C
21%
21°C
21%
22°C
21%
23°C
18%
24°C
18%
25°C or higher
88%
The resolution source for this market will be information from NOAA, specifically the lowest 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 18, 2026, 12:29 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 lowest 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...Latest forecast models from agencies like the China Meteorological Administration indicate mild overnight conditions for Zhengzhou on September 19, driving the 42% implied probability on a low of 25°C or higher. This reflects warmer-than-average advection ahead of any frontal passage, with ensemble guidance showing limited cooling potential under persistent southerly flow. Historical September lows in the region average near 18–20°C, but current observational trends and short-range runs favor elevated minima unless a stronger cold surge materializes. Key resolution hinges on the official daily minimum recorded at the Zhengzhou station, with traders closely monitoring the next model update cycles for any shift in steering patterns or cloud cover that could alter radiative cooling overnight.
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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