Recent official forecasts from the Japan Meteorological Agency and aligned numerical models indicate a maximum temperature of 20°C for Tokyo on June 5, driven by persistent cloud cover and moderate onshore flow that limits daytime solar heating and convective development. This aligns with early-June climatology near 25°C but reflects a cooler anomaly from regional synoptic patterns. Market-implied odds at 100% for 20°C represent traders’ real-time aggregation of these data, with minimal dispersion given the narrow forecast range. Minor upward revisions could occur if clearing skies develop earlier than modeled, though current consensus across ensembles shows low probability of deviation beyond the 20°C threshold.
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 June 5?
20°C 100.0%
17°C or below <1%
18°C <1%
19°C <1%
$92,014 Vol.
$92,014 Vol.
17°C or below
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C or higher
No
20°C 100.0%
17°C or below <1%
18°C <1%
19°C <1%
$92,014 Vol.
$92,014 Vol.
17°C or below
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°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 for the Tokyo Haneda Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 3, 2026, 12:12 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 for the Tokyo Haneda Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent official forecasts from the Japan Meteorological Agency and aligned numerical models indicate a maximum temperature of 20°C for Tokyo on June 5, driven by persistent cloud cover and moderate onshore flow that limits daytime solar heating and convective development. This aligns with early-June climatology near 25°C but reflects a cooler anomaly from regional synoptic patterns. Market-implied odds at 100% for 20°C represent traders’ real-time aggregation of these data, with minimal dispersion given the narrow forecast range. Minor upward revisions could occur if clearing skies develop earlier than modeled, though current consensus across ensembles shows low probability of deviation beyond the 20°C threshold.
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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