Trader consensus on Polymarket tilts toward a Shanghai high of 18°C at 29% implied probability, closely trailed by 19°C (22%) and 17°C (20%), reflecting tight forecast model agreement amid spring variability. Latest runs from the European Centre for Medium-Range Weather Forecasts (ECMWF) and Global Forecast System (GFS) project daytime highs in the 17–19°C range on March 29, driven by mild southerly winds advecting warmer air from the south following a recent cold snap, with partial cloud cover capping extremes. Historical March averages hover around 15°C, but current upper-air patterns favor moderation; uncertainty stems from potential timing of peak heating and low-level moisture, with China Meteorological Administration updates expected daily through resolution. Key differentiator: stronger solar insolation could push toward 19°C, while thicker clouds favor 17°C.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 29?
Highest temperature in Shanghai on March 29?
18°C 28%
17°C 21%
19°C 21%
20°C 10%
13°C or below
2%
14°C
3%
15°C
7%
16°C
8%
17°C
21%
18°C
28%
19°C
21%
20°C
10%
21°C
6%
22°C
5%
23°C or higher
4%
18°C 28%
17°C 21%
19°C 21%
20°C 10%
13°C or below
2%
14°C
3%
15°C
7%
16°C
8%
17°C
21%
18°C
28%
19°C
21%
20°C
10%
21°C
6%
22°C
5%
23°C or higher
4%
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 tilts toward a Shanghai high of 18°C at 29% implied probability, closely trailed by 19°C (22%) and 17°C (20%), reflecting tight forecast model agreement amid spring variability. Latest runs from the European Centre for Medium-Range Weather Forecasts (ECMWF) and Global Forecast System (GFS) project daytime highs in the 17–19°C range on March 29, driven by mild southerly winds advecting warmer air from the south following a recent cold snap, with partial cloud cover capping extremes. Historical March averages hover around 15°C, but current upper-air patterns favor moderation; uncertainty stems from potential timing of peak heating and low-level moisture, with China Meteorological Administration updates expected daily through resolution. Key differentiator: stronger solar insolation could push toward 19°C, while thicker clouds favor 17°C.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions