Recent forecast model consensus from agencies including the China Meteorological Administration points to a minimum temperature in Chengdu around 19–20°C on September 21, driven by persistent cloud cover, light southerly winds, and elevated humidity that suppress radiative cooling overnight in the Sichuan basin. These conditions contrast with clearer scenarios that could allow temperatures to dip toward 18°C or below. Trader odds clustering near 18–21°C reflect genuine uncertainty in short-term model guidance, as small shifts in timing of any light rain or wind changes could alter the overnight low by 1–2°C. Historical September minima in the region average near 18–20°C, providing context for the tight market spread.
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 21?
Lowest temperature in Chengdu on September 21?
21°C 99%
16°C or below 20%
17°C 1.0%
18°C 1.0%
$520 Vol.
$520 Vol.
Sep 21, 2026
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C
No
25°C
No
26°C or higher
No
21°C 99%
16°C or below 20%
17°C 1.0%
18°C 1.0%
$520 Vol.
$520 Vol.
Sep 21, 2026
16°C or below
$0 Vol.
No
17°C
$0 Vol.
No
18°C
$0 Vol.
No
19°C
$0 Vol.
No
20°C
$230 Vol.
No
21°C
$102 Vol.
Yes
22°C
$52 Vol.
No
23°C
$37 Vol.
No
24°C
$37 Vol.
No
25°C
$31 Vol.
No
26°C or higher
$31 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Chengdu Shuangliu International Airport Station in degrees Celsius on 21 Sep '26.
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.Recent forecast model consensus from agencies including the China Meteorological Administration points to a minimum temperature in Chengdu around 19–20°C on September 21, driven by persistent cloud cover, light southerly winds, and elevated humidity that suppress radiative cooling overnight in the Sichuan basin. These conditions contrast with clearer scenarios that could allow temperatures to dip toward 18°C or below. Trader odds clustering near 18–21°C reflect genuine uncertainty in short-term model guidance, as small shifts in timing of any light rain or wind changes could alter the overnight low by 1–2°C. Historical September minima in the region average near 18–20°C, providing context for the tight market spread.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Chengdu Shuangliu International Airport Station in degrees Celsius on 21 Sep '26.
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.
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 19, 2026, 12:30 AM ET
Volume
$520End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zuuuResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Chengdu Shuangliu International Airport Station in degrees Celsius on 21 Sep '26.
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.Recent forecast model consensus from agencies including the China Meteorological Administration points to a minimum temperature in Chengdu around 19–20°C on September 21, driven by persistent cloud cover, light southerly winds, and elevated humidity that suppress radiative cooling overnight in the Sichuan basin. These conditions contrast with clearer scenarios that could allow temperatures to dip toward 18°C or below. Trader odds clustering near 18–21°C reflect genuine uncertainty in short-term model guidance, as small shifts in timing of any light rain or wind changes could alter the overnight low by 1–2°C. Historical September minima in the region average near 18–20°C, providing context for the tight market spread.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Chengdu Shuangliu International Airport Station in degrees Celsius on 21 Sep '26.
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.
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.
Volume
$520End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zuuuResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent forecast model consensus from agencies including the China Meteorological Administration points to a minimum temperature in Chengdu around 19–20°C on September 21, driven by persistent cloud cover, light southerly winds, and elevated humidity that suppress radiative cooling overnight in the Sichuan basin. These conditions contrast with clearer scenarios that could allow temperatures to dip toward 18°C or below. Trader odds clustering near 18–21°C reflect genuine uncertainty in short-term model guidance, as small shifts in timing of any light rain or wind changes could alter the overnight low by 1–2°C. Historical September minima in the region average near 18–20°C, providing context for the tight market spread.
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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