Trader consensus on Polymarket heavily favors a Shanghai high of 17°C (45.5%) or 18°C (36.5%) for March 22, driven by the latest ensemble forecasts from ECMWF and GFS models converging on 17-18°C amid mild southerly winds and high pressure dominance. Recent updates from China's National Meteorological Center refined peak afternoon temperatures to this narrow band, reflecting partial cloud cover limiting solar heating beyond 18°C while urban heat islands and light winds prevent a drop below 17°C. Historically, late March highs average 13-15°C, but an anomalous warm air mass—linked to broader East Asian jet stream shifts—elevates expectations, with model spread of ±1°C differentiating these close outcomes based on boundary layer stability and insolation variability. Key resolution hinges on official Shanghai observatory data post-6 PM local time.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 22?
Highest temperature in Shanghai on March 22?
17°C 46%
18°C 37%
19°C 8%
20°C 3.3%
$288,870 Vol.
$288,870 Vol.
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C
3%
17°C
46%
18°C
37%
19°C
8%
20°C
3%
21°C or higher
1%
17°C 46%
18°C 37%
19°C 8%
20°C 3.3%
$288,870 Vol.
$288,870 Vol.
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C
3%
17°C
46%
18°C
37%
19°C
8%
20°C
3%
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 a Shanghai high of 17°C (45.5%) or 18°C (36.5%) for March 22, driven by the latest ensemble forecasts from ECMWF and GFS models converging on 17-18°C amid mild southerly winds and high pressure dominance. Recent updates from China's National Meteorological Center refined peak afternoon temperatures to this narrow band, reflecting partial cloud cover limiting solar heating beyond 18°C while urban heat islands and light winds prevent a drop below 17°C. Historically, late March highs average 13-15°C, but an anomalous warm air mass—linked to broader East Asian jet stream shifts—elevates expectations, with model spread of ±1°C differentiating these close outcomes based on boundary layer stability and insolation variability. Key resolution hinges on official Shanghai observatory data post-6 PM local time.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions