Official forecasts from the Japan Meteorological Agency indicate a daily maximum of 18°C in Tokyo on May 23, driven by persistent cloudy skies and northerly airflow that limits daytime warming. This consensus aligns with current observational data and model guidance showing suppressed solar heating under stable atmospheric conditions. Historical May averages in Tokyo hover near 22–23°C, but the present setup deviates due to these factors. A brief clearing in cloud cover or unexpected shift in wind patterns could allow temperatures to reach 19°C, though such changes appear unlikely before the close of the daily observation period.
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 23?
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$95,157 Vol.
$95,157 Vol.
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
No
18°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$95,157 Vol.
$95,157 Vol.
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
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.
Market Opened: May 21, 2026, 6:06 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
Official forecasts from the Japan Meteorological Agency indicate a daily maximum of 18°C in Tokyo on May 23, driven by persistent cloudy skies and northerly airflow that limits daytime warming. This consensus aligns with current observational data and model guidance showing suppressed solar heating under stable atmospheric conditions. Historical May averages in Tokyo hover near 22–23°C, but the present setup deviates due to these factors. A brief clearing in cloud cover or unexpected shift in wind patterns could allow temperatures to reach 19°C, though such changes appear unlikely before the close of the daily observation period.
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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