Recent ensemble forecasts from the Japan Meteorological Agency and global models have converged on an overnight low of 19°C for Tokyo on June 17, supported by a stable subtropical high-pressure system, light southerly flow, and partly cloudy conditions that limit radiative cooling. This setup keeps minimum temperatures near or slightly above the mid-June climatological average of 17–19°C, with above-normal seasonal warmth from an expanded Pacific High reducing the potential for sharper nocturnal drops. Traders have priced this outcome at near-certainty because short-range guidance shows high consistency within a narrow 18–20°C band, though modest shifts in cloud cover, timing of any showers, or localized wind changes could still nudge the observed low by 1°C before final measurement at official stations.
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 17?
19°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$20,904 Vol.
$20,904 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
19°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$20,904 Vol.
$20,904 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°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 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 15, 2026, 12:31 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 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...Outcome proposed: No
No dispute
Final outcome: No
Recent ensemble forecasts from the Japan Meteorological Agency and global models have converged on an overnight low of 19°C for Tokyo on June 17, supported by a stable subtropical high-pressure system, light southerly flow, and partly cloudy conditions that limit radiative cooling. This setup keeps minimum temperatures near or slightly above the mid-June climatological average of 17–19°C, with above-normal seasonal warmth from an expanded Pacific High reducing the potential for sharper nocturnal drops. Traders have priced this outcome at near-certainty because short-range guidance shows high consistency within a narrow 18–20°C band, though modest shifts in cloud cover, timing of any showers, or localized wind changes could still nudge the observed low by 1°C before final measurement at official stations.
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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