Trader consensus on Polymarket favors a Shanghai high of 18°C at 31% implied probability, closely trailed by 19°C at 23.5%, reflecting tight uncertainty in short-range forecast models amid mild spring conditions. The China Meteorological Administration's latest guidance and ensemble runs from ECMWF and GFS models project peak afternoon temperatures around 17–19°C, driven by a shallow high-pressure ridge bringing light southerly winds and partial cloud cover that caps daytime heating. Recent observations show Shanghai's highs stabilizing near 16–17°C over the past week after cooler northerly outflows, with low-level moisture limiting further warming. Historical late-March averages hover at 17°C, but model spread highlights sensitivity to cloud evolution and any diurnal instability; hourly updates expected through March 29 could refine the peak differentiation.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 29?
Highest temperature in Shanghai on March 29?
18°C 32%
19°C 24%
17°C 15%
20°C 10%
$11,890 Vol.
$11,890 Vol.
13°C or below
1%
14°C
3%
15°C
5%
16°C
6%
17°C
15%
18°C
32%
19°C
24%
20°C
10%
21°C
6%
22°C
4%
23°C or higher
2%
18°C 32%
19°C 24%
17°C 15%
20°C 10%
$11,890 Vol.
$11,890 Vol.
13°C or below
1%
14°C
3%
15°C
5%
16°C
6%
17°C
15%
18°C
32%
19°C
24%
20°C
10%
21°C
6%
22°C
4%
23°C or higher
2%
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 25, 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 favors a Shanghai high of 18°C at 31% implied probability, closely trailed by 19°C at 23.5%, reflecting tight uncertainty in short-range forecast models amid mild spring conditions. The China Meteorological Administration's latest guidance and ensemble runs from ECMWF and GFS models project peak afternoon temperatures around 17–19°C, driven by a shallow high-pressure ridge bringing light southerly winds and partial cloud cover that caps daytime heating. Recent observations show Shanghai's highs stabilizing near 16–17°C over the past week after cooler northerly outflows, with low-level moisture limiting further warming. Historical late-March averages hover at 17°C, but model spread highlights sensitivity to cloud evolution and any diurnal instability; hourly updates expected through March 29 could refine the peak differentiation.
Experimental AI-generated summary referencing Polymarket data · Updated
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