Forecast consensus from multiple meteorological models points to a high of 28–29°C in Shanghai on September 18, driving the strong market preference for those outcomes. Persistent cloud cover, light northerly winds, and moderate humidity under late-summer subtropical conditions are expected to limit daytime heating while preventing significant cooling. Recent observations show similar highs near 28°C amid stable atmospheric patterns without strong fronts or clear skies that could push temperatures higher or lower. Official guidance highlights mostly cloudy skies with only isolated showers possible, keeping the range narrow and aligning with historical September averages for the region. New model runs or afternoon observations could 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 Shanghai on September 18?
Highest temperature in Shanghai on September 18?
29°C 53%
28°C 36%
30°C 10%
27°C 2%
NEW
$15,585 Vol.
NEW
$15,585 Vol.
Sep 18, 2026
24°C or below
<1%
25°C
<1%
26°C
1%
27°C
2%
28°C
36%
29°C
53%
30°C
10%
31°C
2%
32°C
<1%
33°C
<1%
34°C or higher
<1%
29°C 53%
28°C 36%
30°C 10%
27°C 2%
NEW
$15,585 Vol.
NEW
$15,585 Vol.
Sep 18, 2026
24°C or below
$167 Vol.
<1%
25°C
$1,194 Vol.
<1%
26°C
$489 Vol.
1%
27°C
$2,356 Vol.
2%
28°C
$4,668 Vol.
36%
29°C
$2,900 Vol.
53%
30°C
$1,401 Vol.
10%
31°C
$1,092 Vol.
2%
32°C
$797 Vol.
<1%
33°C
$389 Vol.
<1%
34°C or higher
$133 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Sep '26.
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=zspd
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.Forecast consensus from multiple meteorological models points to a high of 28–29°C in Shanghai on September 18, driving the strong market preference for those outcomes. Persistent cloud cover, light northerly winds, and moderate humidity under late-summer subtropical conditions are expected to limit daytime heating while preventing significant cooling. Recent observations show similar highs near 28°C amid stable atmospheric patterns without strong fronts or clear skies that could push temperatures higher or lower. Official guidance highlights mostly cloudy skies with only isolated showers possible, keeping the range narrow and aligning with historical September averages for the region. New model runs or afternoon observations could refine the exact peak before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Sep '26.
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=zspd
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.
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=zspd
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, 12:56 AM ET
Volume
$15,585End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Sep '26.
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=zspd
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.Forecast consensus from multiple meteorological models points to a high of 28–29°C in Shanghai on September 18, driving the strong market preference for those outcomes. Persistent cloud cover, light northerly winds, and moderate humidity under late-summer subtropical conditions are expected to limit daytime heating while preventing significant cooling. Recent observations show similar highs near 28°C amid stable atmospheric patterns without strong fronts or clear skies that could push temperatures higher or lower. Official guidance highlights mostly cloudy skies with only isolated showers possible, keeping the range narrow and aligning with historical September averages for the region. New model runs or afternoon observations could refine the exact peak before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Shanghai Pudong International Airport Station in degrees Celsius on 18 Sep '26.
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=zspd
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.
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=zspd
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.
Volume
$15,585End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...Forecast consensus from multiple meteorological models points to a high of 28–29°C in Shanghai on September 18, driving the strong market preference for those outcomes. Persistent cloud cover, light northerly winds, and moderate humidity under late-summer subtropical conditions are expected to limit daytime heating while preventing significant cooling. Recent observations show similar highs near 28°C amid stable atmospheric patterns without strong fronts or clear skies that could push temperatures higher or lower. Official guidance highlights mostly cloudy skies with only isolated showers possible, keeping the range narrow and aligning with historical September averages for the region. New model runs or afternoon observations could 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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