Trader consensus on Polymarket heavily favors 18°C as Shanghai's highest temperature on March 22, driven by aligned numerical weather prediction models from the European Centre for Medium-Range Weather Forecasts (ECMWF) and U.S. GFS, alongside China Meteorological Administration outlooks projecting a daytime peak of 18°C under partly cloudy skies and mild southerly winds. Recent developments, including stable ensemble forecasts with minimal spread and no signals of incoming fronts, reinforce this positioning amid Shanghai's typical March highs averaging 13-15°C but boosted by early spring warming. Realistic challenges include an unforeseen marine layer suppressing temps or model bust from rapid jet stream shifts, though probabilities remain under 1% per current data.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 22?
Highest temperature in Shanghai on March 22?
18°C 99.8%
19°C <1%
20°C <1%
21°C or higher <1%
$534,646 Vol.
$534,646 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°C or higher
<1%
18°C 99.8%
19°C <1%
20°C <1%
21°C or higher <1%
$534,646 Vol.
$534,646 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°C or higher
<1%
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 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: Mar 18, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Trader consensus on Polymarket heavily favors 18°C as Shanghai's highest temperature on March 22, driven by aligned numerical weather prediction models from the European Centre for Medium-Range Weather Forecasts (ECMWF) and U.S. GFS, alongside China Meteorological Administration outlooks projecting a daytime peak of 18°C under partly cloudy skies and mild southerly winds. Recent developments, including stable ensemble forecasts with minimal spread and no signals of incoming fronts, reinforce this positioning amid Shanghai's typical March highs averaging 13-15°C but boosted by early spring warming. Realistic challenges include an unforeseen marine layer suppressing temps or model bust from rapid jet stream shifts, though probabilities remain under 1% per current data.
Experimental AI-generated summary referencing Polymarket data · Updated
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