Trader consensus on Polymarket reflects high uncertainty in short-range forecasts for Tokyo's May 15 high temperature, with implied probabilities clustered around 23–27°C amid model ensemble spreads from the Japan Meteorological Agency (JMA) and global systems like ECMWF and GFS. Above-normal seasonal outlooks from JMA for April–June 2026, driven by a persistent subtropical high-pressure ridge promoting warm air advection, elevate odds for 27°C or higher to 26.5%, while historical mid-May averages near 23–24°C and potential sea breezes or partial cloud cover favor lower outcomes like 23°C at 19%. Differentiating factors include urban heat island effects boosting peaks and diurnal variability; key JMA updates at 00Z and 12Z on May 14 could sharpen the signal as resolution nears.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Tokyo on May 15?
Highest temperature in Tokyo on May 15?
24°C 35%
25°C 27%
23°C 23%
26°C 7%
$13,217 Vol.
$13,217 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
1%
22°C
6%
23°C
23%
24°C
35%
25°C
27%
26°C
7%
27°C or higher
5%
24°C 35%
25°C 27%
23°C 23%
26°C 7%
$13,217 Vol.
$13,217 Vol.
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
1%
22°C
6%
23°C
23%
24°C
35%
25°C
27%
26°C
7%
27°C or higher
5%
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 Tokyo Haneda Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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: May 13, 2026, 12:06 AM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
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 Tokyo Haneda Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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/jp/tokyo/RJTTResolver
0x69c47De9D...Trader consensus on Polymarket reflects high uncertainty in short-range forecasts for Tokyo's May 15 high temperature, with implied probabilities clustered around 23–27°C amid model ensemble spreads from the Japan Meteorological Agency (JMA) and global systems like ECMWF and GFS. Above-normal seasonal outlooks from JMA for April–June 2026, driven by a persistent subtropical high-pressure ridge promoting warm air advection, elevate odds for 27°C or higher to 26.5%, while historical mid-May averages near 23–24°C and potential sea breezes or partial cloud cover favor lower outcomes like 23°C at 19%. Differentiating factors include urban heat island effects boosting peaks and diurnal variability; key JMA updates at 00Z and 12Z on May 14 could sharpen the signal as resolution nears.
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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