Trader consensus on Polymarket overwhelmingly favors a Tokyo high of exactly 13°C on March 20, driven by the Japan Meteorological Agency's latest forecast models projecting daytime peaks around 12-14°C amid persistent cool northerly winds and cloudy skies from a lingering low-pressure system. Historical March data from the JMA shows Tokyo averages of 12-15°C, aligning with this positioning, while ECMWF and GFS ensembles similarly cluster near 13°C with low variance. Scenarios challenging this include an abrupt southerly foehn wind surge—common in the region—or shortwave ridging boosting insolation, potentially pushing temps to 15°C+, though current upper-air patterns make such shifts unlikely below 5% probability per model spreads.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Tokyo on March 20?
Highest temperature in Tokyo on March 20?
13°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$324,649 Vol.
$324,649 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C or higher
No
13°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$324,649 Vol.
$324,649 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°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: Mar 16, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Trader consensus on Polymarket overwhelmingly favors a Tokyo high of exactly 13°C on March 20, driven by the Japan Meteorological Agency's latest forecast models projecting daytime peaks around 12-14°C amid persistent cool northerly winds and cloudy skies from a lingering low-pressure system. Historical March data from the JMA shows Tokyo averages of 12-15°C, aligning with this positioning, while ECMWF and GFS ensembles similarly cluster near 13°C with low variance. Scenarios challenging this include an abrupt southerly foehn wind surge—common in the region—or shortwave ridging boosting insolation, potentially pushing temps to 15°C+, though current upper-air patterns make such shifts unlikely below 5% probability per model spreads.
Experimental AI-generated summary referencing Polymarket data · Updated
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