Recent official forecasts from sources including the China Meteorological Administration and international models point to light rain and persistent cloud cover moderating overnight radiative cooling in the Sichuan Basin, supporting a lowest temperature near 20–22°C on September 19. High humidity and weak winds further limit temperature drops compared to clearer conditions. Trader consensus around the 16°C threshold versus 22°C reflects uncertainty in model guidance on cloud thickness and any late steering influences from regional pressure patterns. Historical September averages near 19°C provide context, but current wetter-than-normal signals favor the higher end of near-term projections unless a drier air mass arrives sooner than expected. Updated model runs and local observations over the next 48 hours will refine these probabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Chengdu on September 19?
16°C or below 100%
26°C or higher 60%
22°C 53%
18°C 40%
16°C or below
100%
17°C
39%
18°C
40%
19°C
40%
20°C
40%
21°C
40%
22°C
50%
23°C
40%
24°C
40%
25°C
40%
26°C or higher
60%
16°C or below 100%
26°C or higher 60%
22°C 53%
18°C 40%
16°C or below
100%
17°C
39%
18°C
40%
19°C
40%
20°C
40%
21°C
40%
22°C
50%
23°C
40%
24°C
40%
25°C
40%
26°C or higher
60%
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=zuuu
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 17, 2026, 12:30 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zuuuResolver
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=zuuu
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=zuuuResolver
0x69c47De9D...Recent official forecasts from sources including the China Meteorological Administration and international models point to light rain and persistent cloud cover moderating overnight radiative cooling in the Sichuan Basin, supporting a lowest temperature near 20–22°C on September 19. High humidity and weak winds further limit temperature drops compared to clearer conditions. Trader consensus around the 16°C threshold versus 22°C reflects uncertainty in model guidance on cloud thickness and any late steering influences from regional pressure patterns. Historical September averages near 19°C provide context, but current wetter-than-normal signals favor the higher end of near-term projections unless a drier air mass arrives sooner than expected. Updated model runs and local observations over the next 48 hours will refine these probabilities.
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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