**Overnight radiative cooling under persistent cloud cover and light northerly winds from recent frontal passages is the main driver keeping Zhengzhou's September 21 minimum near 19–21 °C.** Multiple models show a moist, stable air mass with dew points around 18–20 °C and 50–80 % cloud cover through the night, which limits surface heat loss and caps how far temperatures can fall. The tight clustering around 19 °C, 20 °C, and even the 25 °C+ bucket reflects uncertainty in exact cloud timing and any late clearing that could allow an extra 1–2 °C drop via enhanced longwave radiation. Light winds (2–4 m/s) reduce mixing, favoring the lower end of the range, while lingering showers would hold the minimum higher. Updated model runs tonight and early-morning observations will be the next key signals for traders.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertNiedrigste Temperatur in Zhengzhou am 21. September?
20°C 44%
19°C 39%
15°C oder niedriger 35%
22°C 29%
15°C oder niedriger
35%
16°C
14%
17°C
11%
18°C
21%
19°C
39%
20°C
44%
21°C
19%
22°C
29%
23°C
23%
24°C
16%
25°C oder höher
12%
20°C 44%
19°C 39%
15°C oder niedriger 35%
22°C 29%
15°C oder niedriger
35%
16°C
14%
17°C
11%
18°C
21%
19°C
39%
20°C
44%
21°C
19%
22°C
29%
23°C
23%
24°C
16%
25°C oder höher
12%
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.
Markt eröffnet: Sep 20, 2026, 12:28 AM ET
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=zhccAbwickler
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.
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=zhccAbwickler
0x69c47De9D...**Overnight radiative cooling under persistent cloud cover and light northerly winds from recent frontal passages is the main driver keeping Zhengzhou's September 21 minimum near 19–21 °C.** Multiple models show a moist, stable air mass with dew points around 18–20 °C and 50–80 % cloud cover through the night, which limits surface heat loss and caps how far temperatures can fall. The tight clustering around 19 °C, 20 °C, and even the 25 °C+ bucket reflects uncertainty in exact cloud timing and any late clearing that could allow an extra 1–2 °C drop via enhanced longwave radiation. Light winds (2–4 m/s) reduce mixing, favoring the lower end of the range, while lingering showers would hold the minimum higher. Updated model runs tonight and early-morning observations will be the next key signals for traders.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert
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