Ensemble model guidance from the European Centre for Medium-Range Weather Forecasts and Global Forecast System places Shanghai’s May 18 overnight low near 19–20 °C, with modest radiative cooling expected under partly cloudy skies and light southeasterly flow off the East China Sea. Mid-May climatology shows overnight minima typically ranging 17–21 °C, modulated by humidity levels and any weak frontal passages that can suppress or enhance cooling by 1–2 °C. Current conditions favor the 19–20 °C band, yet small differences in boundary-layer moisture or timing of cloud cover introduce enough forecast spread to keep 17 °C and 21 °C within meaningful probability. The next 48-hour model updates from the China Meteorological Administration will sharpen resolution criteria ahead of the 05:00 local minimum reading.
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 May 18?
Lowest temperature in Shanghai on May 18?
19°C 35%
20°C 32%
18°C 21%
17°C 19.9%
NEW
NEW
May 18, 2026
15°C or below
1%
16°C
2%
17°C
20%
18°C
21%
19°C
23%
20°C
32%
21°C
12%
22°C
21%
23°C
3%
24°C
1%
25°C or higher
<1%
19°C 35%
20°C 32%
18°C 21%
17°C 19.9%
NEW
NEW
May 18, 2026
15°C or below
$90 Vol.
1%
16°C
$25 Vol.
2%
17°C
$0 Vol.
20%
18°C
$13 Vol.
21%
19°C
$25 Vol.
23%
20°C
$52 Vol.
32%
21°C
$34 Vol.
12%
22°C
$20 Vol.
21%
23°C
$83 Vol.
3%
24°C
$40 Vol.
1%
25°C or higher
$51 Vol.
<1%
This market will resolve to the temperature range that contains the lowest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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.Ensemble model guidance from the European Centre for Medium-Range Weather Forecasts and Global Forecast System places Shanghai’s May 18 overnight low near 19–20 °C, with modest radiative cooling expected under partly cloudy skies and light southeasterly flow off the East China Sea. Mid-May climatology shows overnight minima typically ranging 17–21 °C, modulated by humidity levels and any weak frontal passages that can suppress or enhance cooling by 1–2 °C. Current conditions favor the 19–20 °C band, yet small differences in boundary-layer moisture or timing of cloud cover introduce enough forecast spread to keep 17 °C and 21 °C within meaningful probability. The next 48-hour model updates from the China Meteorological Administration will sharpen resolution criteria ahead of the 05:00 local minimum reading.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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 14, 2026, 12:30 AM ET
Volume
$435End Date
May 18, 2026Market Opened
May 14, 2026, 12:30 AM ETResolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDThis market will resolve to the temperature range that contains the lowest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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.Ensemble model guidance from the European Centre for Medium-Range Weather Forecasts and Global Forecast System places Shanghai’s May 18 overnight low near 19–20 °C, with modest radiative cooling expected under partly cloudy skies and light southeasterly flow off the East China Sea. Mid-May climatology shows overnight minima typically ranging 17–21 °C, modulated by humidity levels and any weak frontal passages that can suppress or enhance cooling by 1–2 °C. Current conditions favor the 19–20 °C band, yet small differences in boundary-layer moisture or timing of cloud cover introduce enough forecast spread to keep 17 °C and 21 °C within meaningful probability. The next 48-hour model updates from the China Meteorological Administration will sharpen resolution criteria ahead of the 05:00 local minimum reading.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 18 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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.
Volume
$435End Date
May 18, 2026Market Opened
May 14, 2026, 12:30 AM ETResolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDEnsemble model guidance from the European Centre for Medium-Range Weather Forecasts and Global Forecast System places Shanghai’s May 18 overnight low near 19–20 °C, with modest radiative cooling expected under partly cloudy skies and light southeasterly flow off the East China Sea. Mid-May climatology shows overnight minima typically ranging 17–21 °C, modulated by humidity levels and any weak frontal passages that can suppress or enhance cooling by 1–2 °C. Current conditions favor the 19–20 °C band, yet small differences in boundary-layer moisture or timing of cloud cover introduce enough forecast spread to keep 17 °C and 21 °C within meaningful probability. The next 48-hour model updates from the China Meteorological Administration will sharpen resolution criteria ahead of the 05:00 local minimum reading.
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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