Persistent rain, extensive cloud cover, and northerly flow ahead of an approaching frontal system or typhoon influence are capping insolation and advecting cooler maritime air into the Tokyo region, keeping daytime maxima near 23–24 °C on September 20. High humidity and reduced solar heating differentiate these outcomes from the 25 °C scenario, while historical mid-September normals near 26–27 °C highlight the current anomaly. Japan Meteorological Agency guidance and ensemble model runs show only modest day-to-day shifts, sustaining tight market-implied odds between 23 °C and 24 °C. Updated short-range forecasts and observational data over the next 48 hours will refine the exact peak before resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · AktualisiertHöchste Temperatur in Tokio am 20. September?
24°C 41%
23°C 36%
25°C 15%
22°C 8%
19°C oder weniger
2%
20°C
2%
21°C
4%
22°C
8%
23°C
36%
24°C
41%
25°C
15%
26°C
4%
27°C
3%
28°C
4%
29°C oder höher
<1%
24°C 41%
23°C 36%
25°C 15%
22°C 8%
19°C oder weniger
2%
20°C
2%
21°C
4%
22°C
8%
23°C
36%
24°C
41%
25°C
15%
26°C
4%
27°C
3%
28°C
4%
29°C oder höher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Markt eröffnet: Sep 18, 2026, 12:56 AM ET
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=rjttAbwickler
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Abwicklungsquelle
https://www.weather.gov/wrh/timeseries?site=rjttAbwickler
0x69c47De9D...Persistent rain, extensive cloud cover, and northerly flow ahead of an approaching frontal system or typhoon influence are capping insolation and advecting cooler maritime air into the Tokyo region, keeping daytime maxima near 23–24 °C on September 20. High humidity and reduced solar heating differentiate these outcomes from the 25 °C scenario, while historical mid-September normals near 26–27 °C highlight the current anomaly. Japan Meteorological Agency guidance and ensemble model runs show only modest day-to-day shifts, sustaining tight market-implied odds between 23 °C and 24 °C. Updated short-range forecasts and observational data over the next 48 hours will refine the exact peak before resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert
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