Japan Meteorological Agency observations at Tokyo's Haneda Airport station—the official resolution source—have recorded a morning low of exactly 13°C on April 26, with daytime temperatures climbing to a confirmed high of 20°C under partly cloudy skies and light winds typical of spring's diurnal cycle. This positions trader consensus at a near-certain implied probability for 13°C, reflecting real-time surface data that locks the daily minimum as solar heating and urban heat island effects prevent further drops in the Kanto region's stable atmospheric conditions. Historical April lows at Haneda average 11–13°C, aligning with current readings from short-range forecast models. Only an extraordinary late-evening cold front—unlikely given forecast consensus and no supporting upper-air data—could challenge this, with final daily summaries expected by JMA tomorrow.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Tokyo on April 26?
13°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$32,264 Vol.
$32,264 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C or higher
No
13°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$32,264 Vol.
$32,264 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the lowest 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 24, 2026, 12:02 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 lowest 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
Japan Meteorological Agency observations at Tokyo's Haneda Airport station—the official resolution source—have recorded a morning low of exactly 13°C on April 26, with daytime temperatures climbing to a confirmed high of 20°C under partly cloudy skies and light winds typical of spring's diurnal cycle. This positions trader consensus at a near-certain implied probability for 13°C, reflecting real-time surface data that locks the daily minimum as solar heating and urban heat island effects prevent further drops in the Kanto region's stable atmospheric conditions. Historical April lows at Haneda average 11–13°C, aligning with current readings from short-range forecast models. Only an extraordinary late-evening cold front—unlikely given forecast consensus and no supporting upper-air data—could challenge this, with final daily summaries expected by JMA tomorrow.
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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