Recent forecasts from Chinese meteorological agencies and international models highlight a strong rain system combined with weak cold air advection suppressing daytime highs in Wuhan on September 17, positioning 21°C as the consensus maximum with 63% market-implied probability. Persistent cloud cover, widespread precipitation, and northeasterly winds are expected to limit warming, consistent with official outlooks projecting highs of 21–24°C amid mid-to-heavy rain. Model agreement on these cooler conditions has concentrated trader sentiment on the narrow 21–22°C range, reflecting the typical September baseline modified by this synoptic pattern. Updated model runs and official briefings tomorrow morning will refine the exact peak before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Wuhan on September 17?
21°C 75%
22°C 25%
23°C 7%
24°C 2%
$44,433 Vol.
$44,433 Vol.
20°C or below
<1%
21°C
75%
22°C
25%
23°C
7%
24°C
2%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
21°C 75%
22°C 25%
23°C 7%
24°C 2%
$44,433 Vol.
$44,433 Vol.
20°C or below
<1%
21°C
75%
22°C
25%
23°C
7%
24°C
2%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
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=zhhh
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 15, 2026, 12:57 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zhhhResolver
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=zhhh
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=zhhhResolver
0x69c47De9D...Recent forecasts from Chinese meteorological agencies and international models highlight a strong rain system combined with weak cold air advection suppressing daytime highs in Wuhan on September 17, positioning 21°C as the consensus maximum with 63% market-implied probability. Persistent cloud cover, widespread precipitation, and northeasterly winds are expected to limit warming, consistent with official outlooks projecting highs of 21–24°C amid mid-to-heavy rain. Model agreement on these cooler conditions has concentrated trader sentiment on the narrow 21–22°C range, reflecting the typical September baseline modified by this synoptic pattern. Updated model runs and official briefings tomorrow morning will refine the exact peak 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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