Recent forecasts from the China Meteorological Administration and global models indicate mostly cloudy conditions transitioning to sunny skies over Beijing on September 20, with light easterly winds and stable high pressure supporting daytime highs near 28–29°C. This setup reflects modest warming above seasonal norms for mid-September, where average highs hover around 26°C, due to limited cloud cover allowing greater solar heating. Trader consensus clusters tightly on 28–29°C because ensemble runs show minor divergences in afternoon cloud thickness and boundary-layer mixing that could trim or boost peak readings by 1–2°C. Updated model guidance ahead of the 24-hour window will likely narrow the range further, as surface observations confirm the current stable synoptic pattern.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Beijing on September 20?
28°C 31%
29°C 29%
27°C 20%
30°C 15%
24°C or below
<1%
25°C
2%
26°C
7%
27°C
20%
28°C
31%
29°C
29%
30°C
15%
31°C
3%
32°C
1%
33°C
1%
34°C or higher
<1%
28°C 31%
29°C 29%
27°C 20%
30°C 15%
24°C or below
<1%
25°C
2%
26°C
7%
27°C
20%
28°C
31%
29°C
29%
30°C
15%
31°C
3%
32°C
1%
33°C
1%
34°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=zbaa
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, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zbaaResolver
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=zbaa
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=zbaaResolver
0x69c47De9D...Recent forecasts from the China Meteorological Administration and global models indicate mostly cloudy conditions transitioning to sunny skies over Beijing on September 20, with light easterly winds and stable high pressure supporting daytime highs near 28–29°C. This setup reflects modest warming above seasonal norms for mid-September, where average highs hover around 26°C, due to limited cloud cover allowing greater solar heating. Trader consensus clusters tightly on 28–29°C because ensemble runs show minor divergences in afternoon cloud thickness and boundary-layer mixing that could trim or boost peak readings by 1–2°C. Updated model guidance ahead of the 24-hour window will likely narrow the range further, as surface observations confirm the current stable synoptic pattern.
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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