Current Japan Meteorological Agency guidance indicates mostly cloudy skies over Tokyo on June 28 amid the early-summer rainy season, limiting solar heating and supporting highs near 24–25 °C. Seasonal outlooks from the same agency project above-normal temperatures through the period due to a strengthened Pacific High, yet short-range model consensus favors modest cooling from increased cloud cover and possible weak frontal passages. These conditions differentiate the closely matched leading outcomes, as even modest shifts in insolation, boundary-layer moisture, or steering flow can alter peak readings by 1–2 °C. Updated model runs and JMA briefings over the next 48 hours will likely drive further market movement.
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 June 28?
24°C 42%
25°C 30%
23°C 19%
26°C 9%
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
3%
23°C
19%
24°C
42%
25°C
30%
26°C
9%
27°C
1%
28°C
1%
29°C or higher
<1%
24°C 42%
25°C 30%
23°C 19%
26°C 9%
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
3%
23°C
19%
24°C
42%
25°C
30%
26°C
9%
27°C
1%
28°C
1%
29°C or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest 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 26, 2026, 12:02 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 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...Current Japan Meteorological Agency guidance indicates mostly cloudy skies over Tokyo on June 28 amid the early-summer rainy season, limiting solar heating and supporting highs near 24–25 °C. Seasonal outlooks from the same agency project above-normal temperatures through the period due to a strengthened Pacific High, yet short-range model consensus favors modest cooling from increased cloud cover and possible weak frontal passages. These conditions differentiate the closely matched leading outcomes, as even modest shifts in insolation, boundary-layer moisture, or steering flow can alter peak readings by 1–2 °C. Updated model runs and JMA briefings over the next 48 hours will likely drive further market movement.
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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