Incoming cold air advection from the north, combined with an approaching precipitation system, is the main driver behind the closely matched market odds clustered around 21–26°C for Wuhan's September 17 high. This pattern, linked to Huaxi autumn rain dynamics, will increase cloud cover, trigger light to moderate rainfall, and enhance northerly winds, limiting daytime solar heating and producing a sharp 8–10°C drop from recent mid-30°C readings. Official forecasts from the Wuhan Meteorological Observatory emphasize a maximum near 22°C under overcast, breezy conditions, though minor variations in rain timing or front speed could shift the peak by a degree or two. Traders appear to weigh model consensus against historical September variability in the Yangtze River valley, where such cool outbreaks are typical but intensity can differ.
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?
22°C 29%
21°C 24%
23°C 23%
24°C 13%
20°C or below
12%
21°C
24%
22°C
29%
23°C
23%
24°C
13%
25°C
10%
26°C
4%
27°C
3%
28°C
3%
29°C
1%
30°C or higher
1%
22°C 29%
21°C 24%
23°C 23%
24°C 13%
20°C or below
12%
21°C
24%
22°C
29%
23°C
23%
24°C
13%
25°C
10%
26°C
4%
27°C
3%
28°C
3%
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...Incoming cold air advection from the north, combined with an approaching precipitation system, is the main driver behind the closely matched market odds clustered around 21–26°C for Wuhan's September 17 high. This pattern, linked to Huaxi autumn rain dynamics, will increase cloud cover, trigger light to moderate rainfall, and enhance northerly winds, limiting daytime solar heating and producing a sharp 8–10°C drop from recent mid-30°C readings. Official forecasts from the Wuhan Meteorological Observatory emphasize a maximum near 22°C under overcast, breezy conditions, though minor variations in rain timing or front speed could shift the peak by a degree or two. Traders appear to weigh model consensus against historical September variability in the Yangtze River valley, where such cool outbreaks are typical but intensity can differ.
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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