Japan Meteorological Agency's latest forecast, updated April 11 evening, projects a Tokyo high of 23°C on April 12 under mostly sunny skies with light southerly winds and 0% precipitation chance, reflecting a persistent high-pressure ridge fueling above-normal spring warmth after April 11's observed 23°C peak. Trader consensus, however, prices 21°C at 44% implied probability and 20°C at 33.5%, capturing model ensemble uncertainty where global forecasts like timeanddate.com (22°C overcast) and BBC Weather (21°C) suggest cloud development could temper peaks toward historical April averages of 19°C. Key variables include afternoon cloudiness and urban heat effects; monitor JMA's final midday update for shifts ahead of official station measurement at Haneda or central Tokyo observatories.
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 April 12?
Highest temperature in Tokyo on April 12?
21°C 45%
20°C 33%
22°C 13%
19°C 4.5%
$50,728 Vol.
$50,728 Vol.
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
1%
19°C
5%
20°C
33%
21°C
45%
22°C
13%
23°C or higher
4%
21°C 45%
20°C 33%
22°C 13%
19°C 4.5%
$50,728 Vol.
$50,728 Vol.
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
1%
19°C
5%
20°C
33%
21°C
45%
22°C
13%
23°C or higher
4%
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: Apr 8, 2026, 12:29 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...Japan Meteorological Agency's latest forecast, updated April 11 evening, projects a Tokyo high of 23°C on April 12 under mostly sunny skies with light southerly winds and 0% precipitation chance, reflecting a persistent high-pressure ridge fueling above-normal spring warmth after April 11's observed 23°C peak. Trader consensus, however, prices 21°C at 44% implied probability and 20°C at 33.5%, capturing model ensemble uncertainty where global forecasts like timeanddate.com (22°C overcast) and BBC Weather (21°C) suggest cloud development could temper peaks toward historical April averages of 19°C. Key variables include afternoon cloudiness and urban heat effects; monitor JMA's final midday update for shifts ahead of official station measurement at Haneda or central Tokyo observatories.
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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