**Uncertainty in overnight cloud cover, precipitation, and radiative cooling drives the closely matched Polymarket odds for Chengdu's September 13 low temperature.** Forecasts from sources including Yr.no, WeatherBug, and LUFT TIME project overnight lows ranging from roughly 17–19°C, with some indicating potential for 18–20°C under lingering moisture or partial clearing after daytime rain. In September, Chengdu's typical minimums hover near 18–20°C as seasonal cooling begins, but variable monsoon remnants or frontal activity can alter nocturnal heat loss—clear skies promote stronger radiative cooling and lower readings, while clouds or showers trap heat and elevate the minimum. Model spreads in steering patterns and humidity create the balanced trader sentiment across bins near 19°C, 24°C+, and cooler thresholds, with new observational data or updated runs expected to refine probabilities before resolution.
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 13?
14°C or below 65%
24°C or higher 62%
15°C 40%
16°C 40%
14°C or below
65%
15°C
40%
16°C
40%
17°C
24%
18°C
26%
19°C
31%
20°C
40%
21°C
40%
22°C
40%
23°C
40%
24°C or higher
62%
14°C or below 65%
24°C or higher 62%
15°C 40%
16°C 40%
14°C or below
65%
15°C
40%
16°C
40%
17°C
24%
18°C
26%
19°C
31%
20°C
40%
21°C
40%
22°C
40%
23°C
40%
24°C or higher
62%
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 11, 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...**Uncertainty in overnight cloud cover, precipitation, and radiative cooling drives the closely matched Polymarket odds for Chengdu's September 13 low temperature.** Forecasts from sources including Yr.no, WeatherBug, and LUFT TIME project overnight lows ranging from roughly 17–19°C, with some indicating potential for 18–20°C under lingering moisture or partial clearing after daytime rain. In September, Chengdu's typical minimums hover near 18–20°C as seasonal cooling begins, but variable monsoon remnants or frontal activity can alter nocturnal heat loss—clear skies promote stronger radiative cooling and lower readings, while clouds or showers trap heat and elevate the minimum. Model spreads in steering patterns and humidity create the balanced trader sentiment across bins near 19°C, 24°C+, and cooler thresholds, with new observational data or updated runs expected to refine probabilities before resolution.
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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