Latest forecast ensembles from GFS and ECMWF models show Shanghai's high temperature on April 17 clustering around 20°C, with a tight 1–2°C spread driving the close competition among 19°C (19%), 20°C (28.5%), and 21°C (22.5%) outcomes—reflecting trader consensus on mild post-frontal warming after the early April cold snap that capped April 14 at 17°C. Persistent high-pressure ridging and light southerly flow favor daytime heating under partly cloudy skies, though low-level clouds or sea-breeze moderation could cap peaks at 19°C, while clearer conditions push toward 21°C. Mid-April climatology averages 19–20°C highs; new China Meteorological Administration updates and 00z model runs on April 16 will likely narrow uncertainty ahead of resolution based on official station measurements at Xujiahui Observatory.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Shanghai on April 17?
Highest temperature in Shanghai on April 17?
20°C 25%
21°C 23%
19°C 19%
18°C 15%
13°C or below
<1%
14°C
1%
15°C
1%
16°C
2%
17°C
9%
18°C
15%
19°C
19%
20°C
25%
21°C
23%
22°C
8%
23°C or higher
3%
20°C 25%
21°C 23%
19°C 19%
18°C 15%
13°C or below
<1%
14°C
1%
15°C
1%
16°C
2%
17°C
9%
18°C
15%
19°C
19%
20°C
25%
21°C
23%
22°C
8%
23°C or higher
3%
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: Apr 15, 2026, 12:06 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Latest forecast ensembles from GFS and ECMWF models show Shanghai's high temperature on April 17 clustering around 20°C, with a tight 1–2°C spread driving the close competition among 19°C (19%), 20°C (28.5%), and 21°C (22.5%) outcomes—reflecting trader consensus on mild post-frontal warming after the early April cold snap that capped April 14 at 17°C. Persistent high-pressure ridging and light southerly flow favor daytime heating under partly cloudy skies, though low-level clouds or sea-breeze moderation could cap peaks at 19°C, while clearer conditions push toward 21°C. Mid-April climatology averages 19–20°C highs; new China Meteorological Administration updates and 00z model runs on April 16 will likely narrow uncertainty ahead of resolution based on official station measurements at Xujiahui Observatory.
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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