Trader consensus on Polymarket has locked in a 100% implied probability for Tokyo's highest temperature reaching 23°C or higher on April 13, driven by the Japan Meteorological Agency's (JMA) midday forecast of a 24°C daytime high amid mostly cloudy skies clearing to sunny intervals and just 10% precipitation odds. Current observations show temperatures already climbing to 22°C under partly sunny conditions, extending a warm spell with 25°C recorded on April 11 and 22–23°C on April 12—well above the 19.5°C April climatological norm due to persistent high-pressure advection of mild air masses. While model consensus supports this positioning, realistic challenges include sudden increased cloud cover or an unanticipated cool front, though JMA nowcasts indicate low risk; monitor real-time station data from official Tokyo observatories through evening for final confirmation.
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 April 13?
23°C or higher 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$128,420 Vol.
$128,420 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
Yes
23°C or higher 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$128,420 Vol.
$128,420 Vol.
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
Yes
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: Apr 9, 2026, 12:10 AM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket has locked in a 100% implied probability for Tokyo's highest temperature reaching 23°C or higher on April 13, driven by the Japan Meteorological Agency's (JMA) midday forecast of a 24°C daytime high amid mostly cloudy skies clearing to sunny intervals and just 10% precipitation odds. Current observations show temperatures already climbing to 22°C under partly sunny conditions, extending a warm spell with 25°C recorded on April 11 and 22–23°C on April 12—well above the 19.5°C April climatological norm due to persistent high-pressure advection of mild air masses. While model consensus supports this positioning, realistic challenges include sudden increased cloud cover or an unanticipated cool front, though JMA nowcasts indicate low risk; monitor real-time station data from official Tokyo observatories through evening for final confirmation.
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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