Forecast models from multiple sources converge on a daytime high near 31°C for Shanghai on August 18, 2026, driven by typical late-summer subtropical monsoon conditions with moderate humidity, easterly flow, and scattered showers or thundershowers that limit solar heating. Official guidance from agencies tracking regional patterns shows daily maxima averaging 30–32°C in mid-to-late August, with 31°C falling squarely in the climatological norm and recent model runs showing no significant deviation from seasonal baselines. Cloud cover and precipitation chances reduce the odds of pushing into the low 30s or higher, while the market's heavy weighting toward 31°C reflects trader assessment of these stable atmospheric conditions and limited upside risk before evening cooling sets in.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Shanghai on August 18?
Highest temperature in Shanghai on August 18?
31°C 74%
32°C 20%
30°C 10%
33°C <1%
NEW
$60,575 Vol.
NEW
$60,575 Vol.
Aug 18, 2026
26°C or below
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
10%
31°C
74%
32°C
20%
33°C
1%
34°C
<1%
35°C
<1%
36°C or higher
<1%
31°C 74%
32°C 20%
30°C 10%
33°C <1%
NEW
$60,575 Vol.
NEW
$60,575 Vol.
Aug 18, 2026
26°C or below
$314 Vol.
<1%
27°C
$181 Vol.
<1%
28°C
$7,038 Vol.
<1%
29°C
$12,059 Vol.
<1%
30°C
$12,343 Vol.
10%
31°C
$7,838 Vol.
74%
32°C
$10,318 Vol.
20%
33°C
$5,292 Vol.
1%
34°C
$3,871 Vol.
<1%
35°C
$1,145 Vol.
<1%
36°C or higher
$175 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.Forecast models from multiple sources converge on a daytime high near 31°C for Shanghai on August 18, 2026, driven by typical late-summer subtropical monsoon conditions with moderate humidity, easterly flow, and scattered showers or thundershowers that limit solar heating. Official guidance from agencies tracking regional patterns shows daily maxima averaging 30–32°C in mid-to-late August, with 31°C falling squarely in the climatological norm and recent model runs showing no significant deviation from seasonal baselines. Cloud cover and precipitation chances reduce the odds of pushing into the low 30s or higher, while the market's heavy weighting toward 31°C reflects trader assessment of these stable atmospheric conditions and limited upside risk before evening cooling sets in.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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: Aug 16, 2026, 12:56 AM ET
Volume
$60,575End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.Forecast models from multiple sources converge on a daytime high near 31°C for Shanghai on August 18, 2026, driven by typical late-summer subtropical monsoon conditions with moderate humidity, easterly flow, and scattered showers or thundershowers that limit solar heating. Official guidance from agencies tracking regional patterns shows daily maxima averaging 30–32°C in mid-to-late August, with 31°C falling squarely in the climatological norm and recent model runs showing no significant deviation from seasonal baselines. Cloud cover and precipitation chances reduce the odds of pushing into the low 30s or higher, while the market's heavy weighting toward 31°C reflects trader assessment of these stable atmospheric conditions and limited upside risk before evening cooling sets in.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.
Volume
$60,575End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Forecast models from multiple sources converge on a daytime high near 31°C for Shanghai on August 18, 2026, driven by typical late-summer subtropical monsoon conditions with moderate humidity, easterly flow, and scattered showers or thundershowers that limit solar heating. Official guidance from agencies tracking regional patterns shows daily maxima averaging 30–32°C in mid-to-late August, with 31°C falling squarely in the climatological norm and recent model runs showing no significant deviation from seasonal baselines. Cloud cover and precipitation chances reduce the odds of pushing into the low 30s or higher, while the market's heavy weighting toward 31°C reflects trader assessment of these stable atmospheric conditions and limited upside risk before evening cooling sets in.
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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