Recent forecast models from sources like the China Meteorological Administration and international ensembles indicate overnight lows in Chongqing on September 18 will likely settle near 20–22°C amid persistent light rain, high humidity above 85%, and extensive cloud cover that limits radiational cooling. These conditions, driven by a lingering frontal system, align with the market's leading implied probabilities for 20°C (50.5%) and 19°C (37.0%), as warmer advection remains suppressed by northeasterly flow. Historical September baselines average around 22°C, but current observations show 1–3°C cooler readings tied to elevated precipitation totals. Updated model runs ahead of the overnight period represent the key near-term catalyst for any shifts in trader consensus.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Chongqing on September 18?
20°C 55%
19°C 39%
22°C 32%
16°C 29%
15°C or below
26%
16°C
29%
17°C
26%
18°C
29%
19°C
37%
20°C
51%
21°C
28%
22°C
32%
23°C
28%
24°C
25%
25°C or higher
28%
20°C 55%
19°C 39%
22°C 32%
16°C 29%
15°C or below
26%
16°C
29%
17°C
26%
18°C
29%
19°C
37%
20°C
51%
21°C
28%
22°C
32%
23°C
28%
24°C
25%
25°C or higher
28%
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=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 16, 2026, 12:30 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 lowest 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...Recent forecast models from sources like the China Meteorological Administration and international ensembles indicate overnight lows in Chongqing on September 18 will likely settle near 20–22°C amid persistent light rain, high humidity above 85%, and extensive cloud cover that limits radiational cooling. These conditions, driven by a lingering frontal system, align with the market's leading implied probabilities for 20°C (50.5%) and 19°C (37.0%), as warmer advection remains suppressed by northeasterly flow. Historical September baselines average around 22°C, but current observations show 1–3°C cooler readings tied to elevated precipitation totals. Updated model runs ahead of the overnight period represent the key near-term catalyst for any shifts in trader consensus.
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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