Short-range numerical weather prediction models from the China Meteorological Administration and global ensembles currently converge on a daily maximum near 26°C for Wuhan on May 18, consistent with the market’s leading 26°C outcome at 27 percent implied probability. Mid-May climatology in the Yangtze River basin places typical highs between 25°C and 27°C as the East Asian monsoon begins its northward advance, with elevated relative humidity above 80 percent and scattered thunderstorm activity expected to moderate daytime heating through increased cloud cover and evaporative cooling. Recent model runs show minor spread between 24°C and 27°C depending on the timing and intensity of afternoon convection, while easterly winds of 5–10 km/h further temper peaks. Updated forecasts over the next 48 hours will refine these variables ahead of official station observations that determine 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 May 18?
26°C 27%
25°C 23%
24°C 15%
27°C 14%
18°C or below
<1%
19°C
<1%
20°C
1%
21°C
1%
22°C
3%
23°C
6%
24°C
15%
25°C
23%
26°C
27%
27°C
14%
28°C or higher
5%
26°C 27%
25°C 23%
24°C 15%
27°C 14%
18°C or below
<1%
19°C
<1%
20°C
1%
21°C
1%
22°C
3%
23°C
6%
24°C
15%
25°C
23%
26°C
27%
27°C
14%
28°C or higher
5%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Wuhan Tianhe International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/wuhan/ZHHH.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 16, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/wuhan/ZHHHThe resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Wuhan Tianhe International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/wuhan/ZHHH.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/cn/wuhan/ZHHHShort-range numerical weather prediction models from the China Meteorological Administration and global ensembles currently converge on a daily maximum near 26°C for Wuhan on May 18, consistent with the market’s leading 26°C outcome at 27 percent implied probability. Mid-May climatology in the Yangtze River basin places typical highs between 25°C and 27°C as the East Asian monsoon begins its northward advance, with elevated relative humidity above 80 percent and scattered thunderstorm activity expected to moderate daytime heating through increased cloud cover and evaporative cooling. Recent model runs show minor spread between 24°C and 27°C depending on the timing and intensity of afternoon convection, while easterly winds of 5–10 km/h further temper peaks. Updated forecasts over the next 48 hours will refine these variables ahead of official station observations that determine 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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