Forecast models from agencies like the Met Office and regional sources indicate Shanghai's overnight low on September 18 will likely settle near 23–24°C under mostly cloudy skies, light northerly winds, and possible light showers or drizzle that limit radiative cooling. High humidity and the urban heat island effect further moderate temperature drops, aligning with climatological September norms where lows rarely dip below 22°C without stronger cold advection. Trader sentiment splits closely between 23°C and 24°C because model runs show minor variations in cloud cover and wind timing that could shift the exact minimum by 1°C, with limited scope for outliers given stable synoptic patterns. Updated short-range guidance expected overnight will likely resolve the narrow spread before market close.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Shanghai on September 18?
Lowest temperature in Shanghai on September 18?
24°C 44%
23°C 39%
25°C 10%
22°C 6%
NEW
NEW
Sep 18, 2026
19°C or below
<1%
20°C
<1%
21°C
4%
22°C
12%
23°C
35%
24°C
44%
25°C
10%
26°C
4%
27°C
3%
28°C
<1%
29°C or higher
<1%
24°C 44%
23°C 39%
25°C 10%
22°C 6%
NEW
NEW
Sep 18, 2026
19°C or below
$114 Vol.
<1%
20°C
$64 Vol.
<1%
21°C
$0 Vol.
4%
22°C
$2 Vol.
12%
23°C
$821 Vol.
35%
24°C
$1,342 Vol.
44%
25°C
$558 Vol.
10%
26°C
$0 Vol.
4%
27°C
$0 Vol.
3%
28°C
$64 Vol.
<1%
29°C or higher
$89 Vol.
<1%
This market will resolve to the temperature range that contains the lowest 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 lowest 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 models from agencies like the Met Office and regional sources indicate Shanghai's overnight low on September 18 will likely settle near 23–24°C under mostly cloudy skies, light northerly winds, and possible light showers or drizzle that limit radiative cooling. High humidity and the urban heat island effect further moderate temperature drops, aligning with climatological September norms where lows rarely dip below 22°C without stronger cold advection. Trader sentiment splits closely between 23°C and 24°C because model runs show minor variations in cloud cover and wind timing that could shift the exact minimum by 1°C, with limited scope for outliers given stable synoptic patterns. Updated short-range guidance expected overnight will likely resolve the narrow spread before market close.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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, 12:30 AM ET
Volume
$3,055End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest 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 lowest 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 models from agencies like the Met Office and regional sources indicate Shanghai's overnight low on September 18 will likely settle near 23–24°C under mostly cloudy skies, light northerly winds, and possible light showers or drizzle that limit radiative cooling. High humidity and the urban heat island effect further moderate temperature drops, aligning with climatological September norms where lows rarely dip below 22°C without stronger cold advection. Trader sentiment splits closely between 23°C and 24°C because model runs show minor variations in cloud cover and wind timing that could shift the exact minimum by 1°C, with limited scope for outliers given stable synoptic patterns. Updated short-range guidance expected overnight will likely resolve the narrow spread before market close.
This market will resolve to the temperature range that contains the lowest 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 lowest 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 lowest 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
$3,055End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:30 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...Forecast models from agencies like the Met Office and regional sources indicate Shanghai's overnight low on September 18 will likely settle near 23–24°C under mostly cloudy skies, light northerly winds, and possible light showers or drizzle that limit radiative cooling. High humidity and the urban heat island effect further moderate temperature drops, aligning with climatological September norms where lows rarely dip below 22°C without stronger cold advection. Trader sentiment splits closely between 23°C and 24°C because model runs show minor variations in cloud cover and wind timing that could shift the exact minimum by 1°C, with limited scope for outliers given stable synoptic patterns. Updated short-range guidance expected overnight will likely resolve the narrow spread before market close.
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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