Traders have priced the 19°C outcome at 99% for Tokyo’s lowest temperature on June 9 because Japan Meteorological Agency forecasts and current observations place the overnight minimum in a narrow band centered on that value, consistent with early-June climatology of 18–19°C daily normals. Recent model runs show stable steering patterns and limited nocturnal cooling under partly cloudy skies, keeping the recorded low from dipping to 18°C or rising to 20°C. Historical analogs for early June confirm this range as typical absent unusual synoptic shifts. The primary remaining uncertainty stems from possible revisions in final JMA station readings or localized microclimate effects near the official observation site, though such adjustments have been minimal in recent similar cases.
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 June 9?
19°C 99.1%
18°C <1%
16°C <1%
17°C <1%
$28,897 Vol.
$28,897 Vol.
15°C or below
<1%
16°C
1%
17°C
<1%
18°C
1%
19°C
99%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
19°C 99.1%
18°C <1%
16°C <1%
17°C <1%
$28,897 Vol.
$28,897 Vol.
15°C or below
<1%
16°C
1%
17°C
<1%
18°C
1%
19°C
99%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 7, 2026, 12:35 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 lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Traders have priced the 19°C outcome at 99% for Tokyo’s lowest temperature on June 9 because Japan Meteorological Agency forecasts and current observations place the overnight minimum in a narrow band centered on that value, consistent with early-June climatology of 18–19°C daily normals. Recent model runs show stable steering patterns and limited nocturnal cooling under partly cloudy skies, keeping the recorded low from dipping to 18°C or rising to 20°C. Historical analogs for early June confirm this range as typical absent unusual synoptic shifts. The primary remaining uncertainty stems from possible revisions in final JMA station readings or localized microclimate effects near the official observation site, though such adjustments have been minimal in recent similar cases.
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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