Recent forecasts from the Japan Meteorological Agency and international models indicate a cooler-than-average day for Tokyo on May 22, with expected highs centered in the 16–18°C range due to northerly flow and increased cloud cover suppressing daytime warming. This atmospheric pattern aligns with current model consensus, which shows limited solar heating and possible scattered showers that further moderate peak temperatures. Traders appear to weigh these near-term observations heavily against historical May averages of 22–23°C, resulting in strong market-implied odds for 16–18°C outcomes. Updated model runs and observational data over the next 24 hours could refine these probabilities as the resolution window approaches.
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 22?
17°C 38%
16°C 27%
18°C 24%
19°C 7%
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
2%
15°C
6%
16°C
27%
17°C
38%
18°C
24%
19°C
7%
20°C
3%
21°C or higher
1%
17°C 38%
16°C 27%
18°C 24%
19°C 7%
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
2%
15°C
6%
16°C
27%
17°C
38%
18°C
24%
19°C
7%
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 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 20, 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...Recent forecasts from the Japan Meteorological Agency and international models indicate a cooler-than-average day for Tokyo on May 22, with expected highs centered in the 16–18°C range due to northerly flow and increased cloud cover suppressing daytime warming. This atmospheric pattern aligns with current model consensus, which shows limited solar heating and possible scattered showers that further moderate peak temperatures. Traders appear to weigh these near-term observations heavily against historical May averages of 22–23°C, resulting in strong market-implied odds for 16–18°C outcomes. Updated model runs and observational data over the next 24 hours could refine these probabilities as the resolution window approaches.
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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