**Persistent autumn rainfall and extensive cloud cover over Chongqing are suppressing daytime heating, anchoring market-implied odds on a highest temperature of 23–25 °C for September 21.** Official forecasts from Chinese meteorological sources and international models (including GFS and ECMWF runs) show widespread light-to-moderate rain and overcast skies through the day, with highs limited to roughly 22–26 °C. This pattern follows several days of steady precipitation that have kept surface temperatures below seasonal norms. The tight clustering of probabilities around 23 °C (35 %) and 24 °C (24.5 %) reflects strong model agreement on limited insolation and evaporative cooling from ongoing showers, while the modest tail risk for 26 °C or higher accounts for any breaks in cloud cover or slight forecast shifts before resolution. Updated guidance expected from the China Meteorological Administration over the next 24–48 hours will be the key near-term catalyst for any adjustment in trader positioning.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chongqing on September 21?
23°C 34%
24°C 25%
25°C 18%
22°C 14%
18°C or below
<1%
19°C
<1%
20°C
11%
21°C
10%
22°C
14%
23°C
34%
24°C
25%
25°C
20%
26°C
8%
27°C
3%
28°C or higher
5%
23°C 34%
24°C 25%
25°C 18%
22°C 14%
18°C or below
<1%
19°C
<1%
20°C
11%
21°C
10%
22°C
14%
23°C
34%
24°C
25%
25°C
20%
26°C
8%
27°C
3%
28°C or higher
5%
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=zuck
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 19, 2026, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zuckResolver
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=zuck
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=zuckResolver
0x69c47De9D...**Persistent autumn rainfall and extensive cloud cover over Chongqing are suppressing daytime heating, anchoring market-implied odds on a highest temperature of 23–25 °C for September 21.** Official forecasts from Chinese meteorological sources and international models (including GFS and ECMWF runs) show widespread light-to-moderate rain and overcast skies through the day, with highs limited to roughly 22–26 °C. This pattern follows several days of steady precipitation that have kept surface temperatures below seasonal norms. The tight clustering of probabilities around 23 °C (35 %) and 24 °C (24.5 %) reflects strong model agreement on limited insolation and evaporative cooling from ongoing showers, while the modest tail risk for 26 °C or higher accounts for any breaks in cloud cover or slight forecast shifts before resolution. Updated guidance expected from the China Meteorological Administration over the next 24–48 hours will be the key near-term catalyst for any adjustment in trader positioning.
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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