Trader consensus overwhelmingly favors a high of 15°C in Tokyo on March 21, driven by Japan Meteorological Agency (JMA) forecasts and real-time observations indicating mild spring conditions with highs stabilizing around seasonal norms. Historical data shows Tokyo's March averages 11-13°C, but recent mild air masses from the Pacific have pushed projections to 15°C, corroborated by ECMWF and GFS ensemble models converging on this value amid light winds and partial cloud cover. Verified airport measurements already nearing this threshold reinforce the positioning. Realistic challenges include an unforeseen southerly foehn wind gusting warmer air or stalled frontal systems trapping heat, though low-probability per current synoptic charts, potentially nudging highs to 16-18°C if upper-level ridges strengthen unexpectedly.
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 March 21?
Highest temperature in Tokyo on March 21?
15°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$34,150 Vol.
$34,150 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C or higher
No
15°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$34,150 Vol.
$34,150 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°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 17, 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
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 overwhelmingly favors a high of 15°C in Tokyo on March 21, driven by Japan Meteorological Agency (JMA) forecasts and real-time observations indicating mild spring conditions with highs stabilizing around seasonal norms. Historical data shows Tokyo's March averages 11-13°C, but recent mild air masses from the Pacific have pushed projections to 15°C, corroborated by ECMWF and GFS ensemble models converging on this value amid light winds and partial cloud cover. Verified airport measurements already nearing this threshold reinforce the positioning. Realistic challenges include an unforeseen southerly foehn wind gusting warmer air or stalled frontal systems trapping heat, though low-probability per current synoptic charts, potentially nudging highs to 16-18°C if upper-level ridges strengthen unexpectedly.
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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