Trader consensus on Polymarket favors a highest temperature of 21°C in Tokyo on April 5 at 36% implied probability, with 22°C (26%) and 23°C or higher (24%) close behind, driven by the latest Japan Meteorological Agency (JMA) short-term forecasts and global model ensembles like GFS and ECMWF projecting daytime highs of 20–23°C amid a persistent high-pressure ridge promoting sunny skies and above-normal spring warming. Recent observations show Tokyo highs of 17–19°C on April 2–3, aligning with early April climatological averages around 18°C but trending warmer due to reduced cloud cover and southerly flow; historical variability supports this range, though frontal boundaries could introduce uncertainty. JMA's April 2 one-month outlook noted potential heat in eastern Japan, bolstering optimism for 21°C+. Watch for tomorrow's model updates, which could shift odds as resolution nears.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Tokyo on April 5?
Highest temperature in Tokyo on April 5?
22°C 34%
21°C 34%
23°C or higher 21%
20°C 13%
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
1%
17°C
2%
18°C
3%
19°C
6%
20°C
13%
21°C
34%
22°C
34%
23°C or higher
21%
22°C 34%
21°C 34%
23°C or higher 21%
20°C 13%
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
1%
17°C
2%
18°C
3%
19°C
6%
20°C
13%
21°C
34%
22°C
34%
23°C or higher
21%
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 1, 2026, 6:02 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...Trader consensus on Polymarket favors a highest temperature of 21°C in Tokyo on April 5 at 36% implied probability, with 22°C (26%) and 23°C or higher (24%) close behind, driven by the latest Japan Meteorological Agency (JMA) short-term forecasts and global model ensembles like GFS and ECMWF projecting daytime highs of 20–23°C amid a persistent high-pressure ridge promoting sunny skies and above-normal spring warming. Recent observations show Tokyo highs of 17–19°C on April 2–3, aligning with early April climatological averages around 18°C but trending warmer due to reduced cloud cover and southerly flow; historical variability supports this range, though frontal boundaries could introduce uncertainty. JMA's April 2 one-month outlook noted potential heat in eastern Japan, bolstering optimism for 21°C+. Watch for tomorrow's model updates, which could shift odds as resolution nears.
Experimental AI-generated summary referencing Polymarket data · Updated
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